The Component Part And Function of Off-grid Solar Power System

Off-grid solar power system is a completely independent of the existing power grid, it can also be used in remote areas. Whether stationary or mobile home solar power system equipment, its components are substantially the same, including solar panels, batteries, solar charge controllers and solar inverters. According to the requirements of size and function of the required system components are also different.

One: Solar panel
The function of the solar panel is to convert light energy into electrical energy, which can absorb light and directly generate direct current. After connecting the power supply line, the DC power can be stored in the storage battery in the way of chemical energy.

Two: Storage battery

Battery is the electric energy storage device, through the way of electric energy into chemical energy to storage the electricity generated by solar panels. In the needed of using electricity, can be released from converting the chemical energy into electricity.

Three: Solar charge controller

Solar charging and discharging controller act as a central hub, control and regulate the working state of the solar power system, and played a protection function role of the battery overcharge ,over discharge. Place in a big temperature difference, the qualified controller should also have the function of temperature compensation. Other additional function such as optical switch, control switch should be controller’ optional.

Fourth: Solar inverter

Direct output voltage of solar power system in general are DC 12V , DC 24V, DC 48V. For AC 220V load appliances to provide electrical power, it need DC power which is generated from the solar power system to converted into AC 220V or AC 110V power. Therefore, it must use the DC-AC solar inverter. which function is to increase voltage, and the device that converts alternating current to direct current.

In the actual process of the specific installation of solar power system, according to the size of the power system can also need to configure additional components such as junction box. And in order to ease of use, all-in-one solar power generation equipment is a good choice, for how to choose a suitable mobile home solar power equipment--- portable solar generator, all above parts are very important reference factors.

What Is Different Between Off Grid And On Grid Solar PV Power System ?

When you install home solar power PV system, first need to confirm that to install off grid solar power kit or on grid solar power kit. These are two kinds solar power system, the using function and cost have a big different . However, many users don’t understand what different between off grid and on grid system, here I can tell something :

First, off grid solar power system.
which also called independent pv power system, and don’t depends on power grid to independent operation, mainly include solar panel , storage battery, charge controller and inverter etc.. Electricity by solar panels generated directly into the battery and storage it .when need to electrical power supply, DC current in the storage battery through the inverter and converted into 220V alternating current, which is a repeated cycle of charging and discharging process. The power system due to don’t subject to geographical restrictions, it is widely used.  where there is sunlight there can install and use the off grid solar system. Therefore, it is very suitable to use for remote areas without power grid, island, fishing, outdoor breeding base etc. . can also be as emergency power generation equipment for frequent power outages area.

Due to this system need to be equipped with batteries, and occupied the cost of power generation system 30-50%. And the service life of the battery generally in 3-5 years, later to be replaced it, that increased more using cost. If for economy, it is difficult to promotion for a wide range of use , so do not suitable for convenient using electricity place.

But for the non-power grid area or frequent power outages families, has a strong practicality. Especially for solving the problem of power failure, to use DC energy-saving lamps is very practical.

Hence, off grid solar power system is specialized for no power grid or frequent power outages areas to use.

Second, on grid solar power system

On grid, means must be connected to the public power grid, and connect to solar power, home power grid and public power grid, which is a power system that must depends on existing power grid to run. Mainly consists of solar panels and inverter, the solar panels generate electricity and directly transformed into AC 220V by inverter and to power home appliances, when the solar energy generating capacity is more than the use of household appliances consumption, excess electricity will be transported to the public grid; while the solar energy generating capacity can not meet the household appliances use , it will automatically from the grid supplement. This whole process is intelligent control, do not need to artificially on or off.

Because this on grid solar power system can avoid using batteries, greatly saves the cost of the system, especially this year 3 copies issued by the State Grid about solar energy and other new energy grid deal used has made it clear that allowed free network, excess electricity can also be sold to power companies. From the long-term perspective of investment, cost recovery and after several years maybe have a profitable. Therefore, if you want to save electricity costs and convenient power supply , can choose the on grid solar power system, which will be the mainstream way in currently or in the future.

Whereas, on grid solar power system also have shortage, when the public power grid outage, the solar pv power system can not operate.

The different map of off grid and on grid solar pv power system as following:

Field Force

Communication command power supply:
Army field training, geographical condition are very complex, the training situation are changing quickly. The command department often only through radio get in touch with training troops. Make sure that the command center reliable supply of electricity, is the premise of the normal operation of the station. This plays a crucial role for the command center in time to see live images of training troops, get training site exact geographical location, to understand the field training and timely command scheduling .

The application of computer and network technology in troops, Combat Command Center have a variety of  advanced audio and video equipment, the use of electronic equipment and other modern advanced equipment, can enhance the effectiveness of combat exercise. To ensure the power supply quality of the command center, PowerOAK portable solar power generator provided with intelligent army in the field of outdoor power solutions, scientific and reasonable, technology advanced, economical and practical, strong security command center large screen display system, multimedia central control system, room environment control system equipment of electric power safety and for emergency and combat exercise treatment to provide reliable power support.

Daily life of officers and soldiers of field forces:
Daytime combat training for a hard day, it should be have a good relax in the evening. night in camp, that is very annoyed for the troops if there is no lighting and darkness in camp, power is inconvenient. PowerOak have researched and developed portable solar power system "field emergency power supply system" plays an important role in the outdoor lighting system, reside in the barren hills, officers and soldiers tent are all lighting. It can also watch TV, play games, convenient and practical by our PowerOAK this high power mobile power.

PowerOAK portable solar power generator replaced the great pollution traditional diesel and gasoline generator on the environment, can get adequate power supply in the outdoor. It is a storage equipment with environmentally friendly and easy to carry, through the solar power can be "self-sufficiency" do time compensating device power consumption.

PowerOAK outdoor portable solar generator is widely used in military, public security, armed police, fire, field and other military forces.

Island and Fishing Vessels

In China the number of fishing vessels nearly 1 million ,which ocean fishing accounts for about 1 / 4, every year consume large numbers of diesel. Fishing extensive management, backward equipment. Fishermen are short awareness of energy conservation, low utilization rate of the fuel and energy waste and leakage phenomenon is very common, to make the marine environment pollution. Therefore, it is particularly important to actively carry out and promote fishing energy saving emission reduction work.

PowerOAK portable solar power generator can solve these problems completely such as the "marine pollution", "hard electricity utilization". Through the solar power to convert solar energy into electrical energy, power does not run on diesel fuel, no noise, no pollution to environment, provides reliable power protection for the fishermen.

Portable solar power generator can solve the following problems:

1.Electric protection for fishing vessels. The application of PowerOAK portable solar power generator in the fishing vessel, which provides a safe and effective communication and auxiliary lighting for fishing vessel, improved information security and effective communication;

2.Reduce fishermen diesel spending, increasing income. For trawl boat, every year fishing boats operation at sea about six months, after PowerOAK portable solar power system is adopted, fishing boats can save diesel 3800Kg one year, save fuel consumption about RMB 3 million , not only saving diesel expenditure, but also increase the fishermen economic income.

3.Improve fishermen sleeping quality. Before fishing boat is equipped with 2 sets trolley powered diesel machines, when diesel engine normal operation, it will be big vibration, the noise more than 70 DB. Using our PowerOAK portable solar power generator, quiet operation, without starting the diesel generator at night, to improve the sleeping quality of fishermen.

4.Charging simple and convenient. Where there is light there is electricity, the sun light can be converted into electricity.

  

PowerOAK portable Solar generator safe and reliable, adequate electricity! Sustainable development of the country, there is great significance to promote the development of fisheries. Protected marine environment, and to achieve the fishermen abridged, reduce consumption and increase income.

Car Travel

 In self driving and RV car touring,  the main destination is leisure resort for tourists accounted for 65%, their main destination is a good view of the countryside, leisure areas and farms. Sometimes they are very distressed for carrying many small household electrical appliances, digital equipment and a single cigarette lighter port these extremely unbalanced supply needed . Also have had experience in the camp because of no electricity and communications equipment called not being heard by anyone. In fact, if there is a high power portable solar generator will be able to solve these problems.

 Exclude some special models, in generall family car, most of them only provides a cigarette lighter socket as a whole car only power output source. If it is general commuting way. This design seems very reasonable. But if we want to go several days long self driving travel, the scientific scheme of power supply is insufficient.

What is the most afraid of a car for long distance journey ? Broke down on halfway! Where is no a village or a shop, that helpless can be imagined. In addition, lost is the worst and most vexing problem, at that time GPS can help us more. But what a GPS needed ? Yes, continuous power! However ,only the charging port is also occupied by GPS this item , our mobile phone, pad, interphone and other equipment can only helplessly looking at power gradually depleted and helpless!

PowerOAK PS10B portable solar power generator, power generation, storage and output are all-in-one, not only can be used as automobile ignition start, but also for the vehicles such as all types of digital, communications equipment and below 500W small household electrical appliances powered. Complete port, for a variety of equipment power supply at the same time will be no problem.

Solar power generator (even outdoor non electricity area, the product can be converted into electric energy through the sun); portable; 700Wh large capacity lithium battery lasting life, is the three major highlights of PowerOAK portable solar power generator.

After full charged can continuous power supply as following: 
5W tablet PC, can be used 110-120 hours;
10W digital camera, can be used 55-60 hours;
20W LED lamp bulb, can be used 29-30 hours;
30W Audio, can be used 18.5-20 hours;
50W fan, can be used 11.5-12 hours;
100W laptop, can be used 5.5-6 hours;
150W TV,  can be used 3.5-4 hours;
300W domestic drinking fountain, can be used 2-2.5 hours.

In fact, car travel, camping, is also a kind of life experience. in the outdoor area without electricity, how to ensure the power supply and demand, keep the daily life rich and colorful, this portable solar power generator is an outdoor power supply and be worthy of your experience .

What Is The Difference Between Solar Thermal Power Generation and Photovoltaic Power Generation?

What is solar thermal power generation ?
Solar thermal power generation is a new type of solar power generation, generally we said the solar power generation refers to the solar photovoltaic power generation, which are two different ways. That is to say, now solar power system has two ways, thermal power generation and photovoltaic power generation, its operating principle and the use of the scope are big different. Solar thermal power generation also called focus solar thermal power generation, unlike photovoltaic power generation, it is through a variety of physical way to steam solar direct light together and produce high temperature and high pressure steam to drive a turbine to generate electricity. According to the heat collection in different ways, can be divided into three types:  trough solar thermal power generation, solar tower thermal power generation and solar disk type thermal power generation.

The difference between solar thermal power generation and photovoltaic power generation

Firstly, generation principle and device are different.Solar thermal power generation is through the heat collecting device to drive the turbine power generation, which is heat transfer to electric, the main components are collector or device; while photovoltaic power generation is using light of a semiconductor photovoltaic effect to convert sunlight directly into electrical energy, the basic component is solar panel, which is light electricity conversion.

Secondly, the using scope is not the same. It has a better fit for solar thermal power generation electricity and the traditional thermoelectric, water and electricity, suitable for large-scale development.

Also , due to thermal power require higher light, it is more suitable for light which the area in very good condition. And photovoltaic power generation device is relatively simple, to light requirements is relatively low, more suitable for development of miniaturized, therefore, it is more suitable for distributed using.

At last, for specific using, photovoltaic power generation has formed industrialization, use technology more mature, suitable for a wide range of popularized using. At present, thermal power generation still in research and demonstration stage, the cost is also in the high level, the large-scale application also need more time. Recently, China's first solar thermal power generation station have generated electricity successfully, which is national investment construction.

Therefore, at present, the average family in the choice of solar power system does not have to consider the solar thermal power generation.

The Kind And Function Of Solar Electric Power System

Usually, Solar electric power system according to whether merged into public power supply, it can be divided into two systems : off grid solar power system and on grid solar power system.

Off grid solar power system also called independent photovoltaic power generation system, it means don’t depend on the power grid to operate soly pv power system. Except for the solar panels, inverter, it must equip with charge controller and big capacity battery. The principle of solar power system is to storage the electricity in battery when panels generate. And it will output from the battery when needed.

According to the different function, solar electric power system also can be divided into pure DC- power system and DC-AC power system. Pure DC power system is only suitable for driving DC overload, such as DC light, water pump, fans and TV ect… generally speaking, usually solar street lamp, garden lamp and small DC lighting system as like 5W, 10w, 30w. These are pure dc-power system; while DC-AC power system have 220V AC output voltage, that is to say, these are suitable for different kinds home electric appliance, usually above 500W system can output 220V output electricity.

On-grid solar power system means the system connected to the public supply, coordinate power generation system to household with the electric supply. In our country, it already have been connected to the public supply system for free, except for their own electricity, the remaining electricity can also sold to the state. Besides , on grid also divided into energy storage system and without energy storage device power system. When the weather is good and have enough generating capacity, it is no matter whether there is energy storage or not. But if you encounter rainy days, when the electricity supply have been broken down, energy storage system can be used for a part of the electrical use, but without energy storage system can not be powered up.

In a word, it will be much convenient if there is a small energy storage system --- portable solar generator when outage. More information, you could try http://www.poweroak.solar/


Written by Sarah Hwong, Jan 25,2016

The Advantage Of Solar PV Power Generation

Solar pv power generation means through absorbing the solar radiation to generate electricity, if only there is sunlight ,it can install the solar power system. The generate electricity process and principle of solar pv power generation are very simple, it doesn’t like the fuel generator to mechanical motion, or consume the fuel, even generate any hazardous substance or gas. Recently years, which is the new energy source using project strongly promoted all over the world. 

Why solar pv power generation become more and more popular in the world ? Specifically speaking, there are three main advantages as below :

First, energy source are free, and have a sustainability. Solar pv power generation via absorbing the sun radiation to generate electricity, the solar energy is the most precious free source which the universe present to our human being. According to the statistics, exposure to the earth solar energy is much bigger than our wasting energy about 6000 times, this source all around the earth, do not subjected to geographical and altitude factors limit.

Second, convenient to use. If there is sun light , it can install the solar power system to power supply. Flexible distributed, solar power system can be eight big or small, large to the solar power plant, small to our Poweroak portable solar generator, both can nearby power supply. That is to say, it is suitable for tourism, exploration, household lighting, pasturing area, field working, forestry home, island fishing boat, border posts and other areas without or lack of electricity power.

Third, no pollution, no pressure on the environment. All process of solar generating are physical, don’t burn the fuel, and will not generate any substance, no pollute the air, don’t make the noise, either. It is really a green environmental renewable energy source.

Besides, with the improvement technology of solar power system utilization, generating efficiency will be great progress, and these advantages will be more and more appeared. What’s more, The home solar power system will take a good market opportunity and have a great development.

Written by Sarah Hwong , Jan 22,2016

The Solar Photovoltaic Power System Disadvantage

Recently years, solar energy have been great promoted and developed. In western country many households and organization have installed solar power system to power supply. Solar photovoltaic power system advantage have become more and more acceptance. In China, government also come on the policy to encourage people to use the solar pv system. However, when choose the solar pv system, need to consider the using solar photovoltaic system disadvantage.

First, the energy density is low, solar panels floor space are large. Although the sun is a tremendous source energy, deliver the total energy of the earth is also great, really exploited is little, the energy density is relatively low. At present, conversion efficiency of the solar panels are still too low, which requires using a large area of solar panels to absorb solar radiation to produce a certain amount of electricity.

Second , it has a great effected by weather change for the electric consumption.
Solar photovoltaic energy source is the sun light radiation, greatly affected by cloudy, rainy and fog days . Due to different geographical location, resources of sunshine is also great difference , and subject to geographical restrictions.

Last ,the home solar power system cost is relatively too high. Using the sun light is free, but a complete set of the system device is too high. For consumer, use the solar pv generation cost is much higher than the public supply system, so there is no cost advantage. It also has been the biggest obstacle to troubled people to install solar power systems. Whether it can save electric charge to Install home solar power system, many people think that is. For the large pv system that is, but for the ordinary households, to invest solar pv power generation have no cost advantage.

Although solar pv power system still have many insufficient, with the increasingly seriousness of energy crisis problem, it will be an effective way to great develop and use the new energy. With the government support and technology development, the advantage will be more and more significant.

Function and Classification Of Solar Charge Controller

Written by Sarah Hwong,Jan 20,2016

Solar charge controller is one of the core component for solar pv system, it take an important role to keeping balance for system operation. different scale pv system, take different effect. for small solar power system, controller can control charge and discharge, its function is to protect the storage battery; while the larger pv system, it is not only to protect the battery, but also keep pv system capacity and protect all system normal operation.

Specifically speaking, solar charge controller have as following functions :

First, prevent storage battery over-charge and over discharge, extending the battery service life;

Second, prevent controller, inverter and load device internal short, also avoid solar panel array s and storage battery polarity connected against to cause damage;

Third, temperature compensation function.

Besides, controller are equipped with working indicative function, let people grasp the system operational state in time.

According to the size of using solar pv system , such as solar panels input power and load power can be divided small power, medium-power , high-power and special controller etc.. in accordance with different circuit principle, can be divided to shunt, series, pulse width modulation, multi way control, two double stage voltage controller and MPPT control method; According to the different control way of discharge process, can be divided into conventional discharge and remaining electricity discharge control. 

In addition, with the development of technology, some also use a microprocessor circuit, called intelligent controller, this type controller realizes software programming and intelligent control, and with automatic data acquisition, data display and remote communication function.

 With National attaches great important in the field of solar photovoltaic, installed solar power system on the roof becomes more and more attractive. And the choice of solar charge controller is also an important factor. In generally, for a small solar photovoltaic power system controller, can choose function relatively simple and low cost controller. But for large photovoltaic system, taking into account the stability and efficiency of the system, it is necessary to choose a higher cost, function more comprehensive controller.

Portable Solar Power Generator System Erection Joint Method

Written by Sarah Hwong, Jan 19,2016

At present , more and more portable solar power generator systems have gone into many households. But how to install and joint that become one of the most important thing people care about. 

Portable solar power generator system is a generation device which integrate storage battery, charge controller and inverter in a mainframe box. All kinds of devices circuit and input and output cable have been fixed well, debug work also have been prepare well, the users can use directly do not need to install and debug. Only requires users to connect the solar panels.

For the panel power of solar power system below 100W, solar panel power supply cable can be directly inserted into the power input port of the system main box.

For the solar panels power is 200W or 400W, these solar power systems will be based on the mainframe of DC output to choose the way in series or parallel to connect the wires.Here, 200W power system AC output is 1000W, DC output 12V, which are two pieces 100W panels with parallel connected; 400W power system AC output is 1000W, output DC 24V,which need four pieces 100W panels with 2 parallel and 2 series connected.

Schematic diagram:

The solar panel in series is connected a positive electrode of a battery plate with a negative electrode of the other battery plate; But the parallel is connected two panels in positive positive and negative negative . 

In a word, if you have any question about the erection joint method, or want to know more information about the portable solar generator, please feel free contact us.

Solar Power Systems For Home Use Should Pay Attention to The Type Of Electrical Appliances

Written by Sarah Hwong , Jan 18,2016


Solar power systems for home use is according to the user's actual electricity to design and configuration, including the use of power and electrical appliances. For a complete set of solar power generator system, generating capacity is limited, with electrical appliance also have a maximum power limited. If you inattention that there will greatly reduce the service life of the system, even directly cause damage for the key components.

 First , The using electrical appliance power
After using solar power system, it is necessary to get into a good habit to looking at electric power use. Our product operation instructions will inform users the number watts of the maximum load for system, this is the inverter maximum wattage, users should be aware of it. In Generally, Electric appliances will have power parameter identification, before using , had better to particularly care about the power number , to see whether it is used within the allowed range. If the appliance power is too high, it should not be forced to use.

Second, Electrical appliance type

This is very few people to pay attention , but it need to be care about if you use solar power system. Usually it can be divided into resistive and inductive, resistive electrical didn’t impulse current when using, such as incandescent lighting, electronic energy-saving lamps, electric irons, electric water heater, etc.. However , inductive electrical appliances in the startup has a strong impulse current, impact current often more than the normal operating current of 5 - 10 times, such as fluorescent lamps, television, motor, refrigerator, electric stove, water pump and so on. For example, if the inverter of solar generator kit is 1000W, can drive 1000W electric water heater, but do not drive 1000W motor.

 Therefore, when you purchase solar generator kit, first of all to consider that use electrical appliance power and type, this design is accord with the practical use of the generating system. How to calculate the capacity of solar power systems for home use? Except for the professional can calculation, we can also be with the aid of software estimation.

How to Calculate Solar Power Kits Homes Capacity

Written by Sarah Hwong , Jan 16,2016


As we all known, The capacity of solar power kits homes can be either big or small, according to the home electricity consumption, must from practicability and economical to consider, what is the capacity of system installed be suitable? In order to effectively control the cost of all systems, to calculate the solar panel capacity and storage battery capacity are the most basic and important work to design the solar power system.

To design the solar power system is an extremely professional work, because it need to relate to many different factors, making the system design is more complex, for non-professionals, it is rather difficult to grasp. However, before you plan to install solar power systems, it is very necessary to make a preliminary understanding of the needed amount of solar panels and batteries.  A professional solar power system design software just to solve this problem.

By means of solar power systems calculation software, working on solar photovoltaic system designers and non-professionals can use it to quickly and easily calculate the capacity needed for solar panels and batteries. Software interface simple and clear, just enter your average daily electricity consumption, system voltage, the number of rainy days to use solar power generation system, you can quickly calculates results.

However, because of considering various regions situation are different, the results only as a reference to install their own solar power systems, the final result need to further calculation.

If you want to know more information for how to calculate solar power kits homes capacity, please contact us  http://www.poweroak.net/

Design Home Solar Power Generator System Need to Consider These Factors

Written by Sarah Hwong ,Jan. 15,2016

Home solar power system can be either big or small, small to one or two hundred Watt, big to tens of kilowatts. For household, a too small system the power is not enough, too big is very waste , which requires according each household's actual demand for electricity to design suitable solar power system. In generally, Home solar power generator system designed mainly to consider the following factors:

1.Where is the solar power system used?

Climate conditions across the country are not the same, there is a great difference for the sun's light conditions, the amount of solar radiation directly affect the solar panels generated electricity.

2. How much load power to be used? how many hours per day to work??

The load power refers to the use electrical power, know the working hours can calculate the power consumption a day. Such as notebook computer power is 100 watts, if used 8 hours a day, the power consumption will be 800W . Each electrical power consumption plus together, can calculate a day’s total electricity consumption.

3. How many days does it need to be powered by a solar generator for homes, if it is to meet a rainy day without sunlight?

Solar power system can not generate electricity in rainy weather, which need to save the excess power in the light time, the number of days to use in the rainy days to determine the number of batteries will be used.

4.DC output or AC output ? What is the output voltage of system?

According to the using different environment of solar power system, output current can be AC and DC, the output voltage also have many kinds. In China, all household electricity are 220V AC output.

In a word, there are some differences for components and functions of the composition of solar power system, choose what kind of specifications must consider these above factors, and you can design a suitable home solar power generator system.

How much a complete home solar power kits to be installed ?

“How much a complete home solar power kits to be installed ?” this is the customers are most concerned about. Before answer this question, you should confirm that to install off grid solar power system or on grid solar power system. Because these two installation cost have great differences. For the same capacity power system, due to release energy storage devices the using cost of on grid system have great reduced.

From the system components, include solar panel, storage battery, controller and inverter. But each component selection have a great space , how much wattage for the solar panel to be chosen? how many capacity for the battery? Those all depend on the user's electricity utilization situation, how much is the electricity per month? What are the main power appliances? Where to be used? Only to make clear the problem first , then engineers can work out the suitable solar power system for users. That is to say, solar power system is based on the users’ electricity utilization and requirement to produce. Because every household’s electricity utilization is different, there is no uniform standard to design the solar power system.

For on grid solar power system, because connect to the public power grid, when power surplus it will be transported to the power grid, power is insufficient and will be input from the grid. Therefore, customers can choose power supply for some household appliances ,can also choose to supply for all . The system can according to user's economic investment, can either be big or small.

As the off grid solar power system, the capacity have a great flexibility, no standard product configuration. It according to the user’s location and electricity utilization, the product configuration is different. There is no doubt, greater system capacity, needs driven electrical power is greater, cost will be higher and higher. For those who need to drive high power electrical appliances such as air-conditioner and induction cooker, requirements of the system capacity is not small, and cost will be much higher.

So, customers before asking price, to their own situation have a number in mind, the basic problem is how much daily electricity consumption is or what appliances will be used and how long be used in the day time. After Engineers know how to calculate the capacity and configuration of your home solar power kits, so that can probably calculate the required capacity of the system and the key components of the selection and design, and customized to meet the condition of the electric power system, to achieve both practical and affordable.

Solar off grid power system Maintenance

“How many years can be used for solar off grid power system?”some new users often asked .I think this question should be separated, because one set completed solar power system include three parts: solar panel ,controller and inverter, battery.

Solar panel have a long service life, can reach 20-25 years; the same as controller and inverter can also reach 5-8 years, while the battery is just 3-5 years. As the battery energy storage device, is one of the most important part of solar off grid power system, but also the most vulnerable part , which lifespan directly determines solar power system's service life. Users in the use of solar off grid power system, special attention should be paid to maintenance of storage battery and inverter, these two components are affected by user habits. So should be pay attention to using.

First, battery maintenance

Batteries are experienced to repeat charging and discharging in the using process, the so-called battery lifespan, can be generally considered to be capable of withstanding charge and discharge cycle back number. The cycle back number first is affected by the depth of discharge, the deeper the depth of discharge, the few cycle back number will be. Secondly, if the battery is not timely charge after discharge, greatly reduced cycle times,too. So when in use, try to avoid excessive depth of discharge, if due to poor weather conditions, resulting in insufficient charge, you should use less or stop using. Especially in anticipation of a long rainy weather, must ensure the battery being a certain amount of power. That is to say, if want your off grid solar system have a long service life, need to protect the battery.

Second, inverter maintenance

Inverters have its rated output capacity, different capacity power generation system will configure different output capacity inverter. To power supply for home appliances, we must ensure that the electrical power is less than the inverter rating output capacity. Generally speaking, keep the electrical power is low in 80% of the power inverter is appropriate. For example, a 300W of off solar power system. The configuration of inverter is 1000W output capacity, can only give below the 1000W power electronics use , to make sure electrical power less than 800W will be the most reasonable. If it is inductive load motor, it should be below 200W.

It can be known ,the service life of solar off grid system m is affected by the user's habits, it need to be pay special attention to when using. 

What is the lifespan of off grid solar system kits?

Off grid solar system kit is not simply a machine, but an integrated system which made by the solar panel, storage battery, controller, inverter and other accessories. Each component work coordinated but independent, performance is not the same, service life is also great difference.

The solar panel lifespan is 20-25 years. Which is made from the surface’s tempered glass, anti-aging EVA glue and TPT back plate laminated, can be placed outdoors for a long time, accept light and power generation.

ice life is also great difference.

According to the size of battery , the service life of 40ah is 3-5 years, and more than 50ah is 5-8 years. For life service, there is a great relationship with operation method and working environment . If the off grid solar system is often deep discharged, it will shorten the life cycle, especially has not been timely charged after deep discharge . Besides, storage batteries are self discharge, if not used for a long time, should ensure charge and discharge at least three months.

The controller of off grid solar system kit service life is 8 years. The controller's performance is quite stable, generally not easy to appear the problem.

The inverter of off grid solar system kit service life is 8 years. It has a great relationship with working environment. Long time full load carrying will shorten the service life of inverter, especially over the load of electrical power capacity cause damage. In generally, while the load power is not more than 80% of its rated power. When in using, should pay special attention to the use of electrical appliances.

Overall speaking, Due to the relative independence, each component of the off grid solar generator can be easily maintained, also can be replaced when the problem occured, keeping the system can be used continuously.

Human beings should increase the use of clean energy

At present, the energy crisis has become the most common problem of all mankind, and how to solve the energy crisis is imminent. The development use of clean energy power generation provides hope for solving this crisis.

Clean energy power generation that means does not depend on burning fossil fuels to generate electricity for energy use, such as hydropower, nuclear power, solar energy system, wind energy and bioenergy power generation etc.. to pursuit clean energy power genration is becoming a global consensus. This is not only to alleviate the energy crisis dilemma ,but also for the sustainable development of human, and return a green home for humanity. However, clean energy utilization can not beat the traditional coal in the cost of dominance.

If people have not yet really understood regular use clean energy to generate electricity has brought us great improvement for environment . In December 2015, Beijing continued haze should be caused people to panic for excessive emissions, serious air pollution should be taken seriously enough attention. Thermal power plant use coal, factory production facilities also use coal ,every day a lot of coal and oil combustion, emissions are air pollution gases.

nance.

Data shows, 2012 China use clean energy generation grew by 28.5%, accounted for all of the Internet consumption 21.4%. The wind and solar power system were increased by 35.5% and 414.4%. This is a gratifying achievement, but there is a long way to go for establishing clean energy low consumption type of social goals. 

In a word, using clean energy existing prominent issue is devoted to large, low efficiency, indirectly caused investment cost is too high, to improve use efficiency is placed in the immediate problem.

Islands have off-grid solar generator system no worry about out of electronic

Off-grid solar generator system is run independently, can be used in a variety of remote areas. China's eastern and southern broad seas distribute a large number of islands, many islands are inhabited, but living electricity consumption is one of big problems. These islands are far away from the mainland, no matter from the economic or technology point of view ,it is not realistic to set up the grid power.

Before solar power generator technology, people can only use diesel generators to power . Every day can only be limited to use a few hours,  some household electrical appliances such as television, fan and refrigerator can not be used. Due to the oil of diesel generators need to be transported by boat from the mainland in the past, if the case of typhoon and other inclement weather conditions , generator can't use because of the lackness of oil. Even if generators use, it also have some limit ,the continuity of power supply can not be guaranteed.

Especially in some islands which are military uses, it is very obvious  the inconvenience caused by the power shortage. With extensive use of solar power system, which can be fundamentally change. According to reports, China a coastal defense regiment stationed in the island installed off grid solar generator systems, finally solve the problem of hard power.

In generally, islands are often very scattered, even though it can be erected grid, the cost will also higher than using solar power generator’s . In fact, not only in the islands, a lot of remote mountain areas and outdoor breeding places have these situation of hard power, these regions can take a consideration to use solar power system. Moreover , to consider the cost , families in poor areas can try portable solar generator to supply the power first.

The storage battery of solar pv power system installation methods

What matters need to be attention when install a solar photovoltaic power system? I think some new users are very care about it. Please carefully and patiently look up following :

In the process of installing solar pv power system, the storage battery is the battery components have been installed after another important work. Due to the battery lifespan is very susceptible to the environment,  specially high temperature and humid environment will greatly shorten the service life of battery. Therefore, battery should be installed in a well ventilated, moistureproof and dry environment as far as possible. In addition, taking into account the efficiency and security of the system, when install a small power system, the solar storage battery should be located as close as possible to the solar battery board and a controller; while in large power system, solar storage batteries have been better divide with the controller, inverter and AC power distribution cabinet to open placed.

Before placing, between solar generator battery and ground should be taken insulation measures, in order to avoid the battery and ground short circuit and discharge. It is very easy to solve these problems , generally can choose dry wood or other insulating object . If there are more batteries, should consider to choose battery special bracket and then stents grounding which is more reliable.

After installation, need to measure the total and single voltage of the battery , a single battery’s voltage must be equal. It should be noted that when wiring need to distinguish clearly positive and negative pole, should not be reversed. In order to ensure the quality of wiring, batteries must be in close contact between the electrode and wiring note ,and in electrode note and the connecting point coated with a layer of vaseline oil film, to prevent poor contact caused by corrosion and rust after too long time. Besides, due to the battery is a flammable object, should be paid special attention to fire prevention measures.

I hope above methods can help you when want to install a solar pv power system. If there still have questions, welcome to contact us.

The cost of home solar generator system is too high to affordable

Installed a solar panels on the roof of our house, this home solar generator system is becoming the renewable energy solutions which have a prospect market. However, for the present  general public, to buy a home solar power system is very difficult as like a marrying pretty girl.

Nowadays, human beings are facing with the problem of energy crises, particularly in remote areas of many countries ,which have restrictions on the use of household electricity, frequent power outage is a very common thing. while for the power grids of the citizen, rising electricity charge also has become a big problem. Now thanks to advances in solar technology, people can use home solar power system to power-up . That could be a good thing for us. but the higher cost installation of solar panels has become a problem,too. The current situation is: home solar power system for the general public is too costly.

At present, the main reason of solar generator kit high cost installation is the solar panel modules which price are too high. As someone said, monthly electronic bills have already too high, so want to install a home solar generator system on the roof. Whereas , when knew the needed installation cost, he have found that could not pay for it. That is to say, for a general family, to install that system is not cost-effective.

Maybe you will say, the government should take a subsidy policy for the purchasing solar panel modules families. There is nothing wrong with it, many countries have done that. But we need to know only depends on the government support is not enough, especially in the difficulty economic period. In fact, all we hope that the researchers keep trying to improve the solar technology.

Use the technology to reduce the cost of solar panels. Only in this way, home solar generator system can be able to become a people affordable renewable energy solutions. Solar power system will Improve efficiency of energy utilization.

How to distinguish the capacity of off-grid solar generator systems

Off-grid solar generator systems are made of solar cell panels, battery , controller and inverter etc. But two most important parts are solar cell panels and inverter. They are interworked together to decide all systems’ function directly what kinds of electric appliance can be loaded. So, when descript the capacity of off-grid solar generator systems, that is according to the solar panels and inverter’s rated output capacity. While you are choosing and purchasing off grid system, must composite these two factors.

The capacity of solar cells is the total wattage of solar panels , it decide that solar generator systems can generate how much electric .For example , 300W solar cell panels, it can be one pieces of 300W panel, also two pieces of 150W panels, that representative under the standard lighting conditions one hour can generate 300WH electronic ( equip to 0.3 degree), which also means 300W solar power systems generate electronic per hour.

The rated of inverter output capacity is the Maximum power which can be output, on behalf of the power to drive a certain electrical. For example, a inverter which rated output power is 1000W, drive the electric appliance power must be less than 1000W. in generally, the electric appliance power can not more than 80% rated power of inverter. If the driven electrical appliances are inductive appliances which instantaneous power are more than  rated power several times , such as electromotor, refrigerator, air-conditioner and washing machine etc, the inverter’rated power must be more than electronic appliance’s about 5-8 times. Therefore, a solar generator kit with 1000W inverter, the driven electronic appliance power must be less 1000W.That is why the home solar power generator system need to pay attention to the type of appliance.

For the set of off-grid solar generator systems capacity, we usually means solar cells panels capacity, sometimes also means the rated output capacity of inverter. A set is equipped with 200W solar panels and 500W inverter power generators, which often called 200W solar power system, or 500W off grid solar system. So, when we purchase , had better to think about these two factors.