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The capacity of the PV module and the capacity ratio of the inverter are commonly referred to as the capacity ratio. The reasonable capacity ratio design, should be integrated with the consideration of specific projects, the main factors including irradiance, system loss, the efficiency of the inverter, the service life of inverter component installation angle and so on. Cause the inverter accounts for only about 5% of the system cost, in the distributed solar power plant system, rely on components over the capacity ratio as to reduce the quantity or power of the solar powered inverter, the investment income is very few, but also bring other problems, specific analysis is as follows.

1.Different regions have different irradiance

According to the standards of the national wind energy assessment center, Chinese solar energy resources are divided into four categories. Even in the same resource area, there is a big difference in annual radiation in different places. For example, in the area of Tibet and Qinghai which are the same type of resources, the annual radiation of the Tibet is 7998MJ/m2, while Qinghai is 6815MJ/m2. This means that the same system configuration, which is the same capacity ratio, the region’s power generation capacity of Tibet is 17% higher than Qinghai. To achieve the same amount of power generation, you can achieve by changing the capacitance ratio.

2.System loss

In the solar power system, the energy from the solar radiation to the PV module, through the DC cable, confluence box, DC distribution to the inverter, which has the loss of each link. That is, in the same assembly capacity and inverter capacity, loss due to various objective existence, the actual output capacity of the inverter is only about 90% of the rated capacity, even in the best time of light, the inverter is not full work.

3.Inverter efficiency

The efficiency of the inverter is not constant, there is the loss of power switching devices and magnetic losses; when it is in low power, the efficiency is relatively low; the highest efficiency at 40% to 60% power; when more than 60%, the efficiency gradually reduced. Therefore, the total power of the PV power should be controlled between 40% and 60% of the inverter power to achieve the best efficiency.

4.The service life of inverter

Solar power inverter is an electronic product, there is a great relationship between the reliability and the operating temperature of the inverter, the temperature of capacitors, fans, relays and other components increase of 10 degrees, while the failure rate can be increased by more than 50%. The operating temperature is related to power, according to statistics, the service life of inverter works in the 80-100% power power is about 20% lower than in the 40-60% power for a long time.

5.The best inverter operating voltage range

The operating voltage is about the rated voltage of the inverter, while the efficiency is the highest, the single-phase 220V inverter, the inverter input rated voltage is 360V, the three-phase 380V inverter, the inverter input rated voltage is 650V. Such as 3kva inverter, with 260W components, working voltage 30.5V, with 12 working voltage 366V, the total power of 3.12kW is the best. 30KW inverter with 260W components, connected to 126 components, each of the 21 strings, the voltage is 640.5V, the total power of 32.76kW is the best.

Above all, when the power of the system between the rated power of 40-60%, the highest efficiency and the longest service life. In order to achieve the best performance of the inverter, according to different lighting conditions, components and inverters have different ratio.

SSP3118C3 1.5KVA & 3KVA Solar Inverter Off Grid MPPT Transformerless Type

Key Features
1. Pure sine wave 3KVA solar inverter off grid MPPT
2. Cold start function
3. Remote panel available
4. Auto restart while AC is recovering
5. Overload and short circuit protection
6. Compatible to mains voltage or generator power
7. Selectable charging current based on applications
8. Configurable AC/Solar input priority via LCD setting
9. Built-in MPPT solar charge controller
10. Smart battery charger design for optimized battery performance
11. Selectable input voltage range for home appliances and personal computers

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1.Solar MPPT charge controller input and output short circuit protection function. The input and output circuits of the controller should be provided with short circuit protection circuit.
2.Anti reverse charge protection function. The solar MPPT controller must have the protection function to prevent charging back to the solar cell from the battery.
3.Polarity reverse protection function. The solar cell component or battery is connected with the controller, and when the polarity is reversed, the controller should have the function of protecting the circuit.
4.Lightning protection function. The input end of the controller is provided with a lightning protection function, and the type and the rated value of the arrester shall ensure that the expected impact energy can be absorbed.
5.Anti impulse voltage and impulse curren protection. The controller should not be damaged by applying 1.25 times nominal voltage at the input of the controller for an hour. The controller charging circuit current reaches 1.25 times the nominal current and lasts an hour, the controller should not be damaged.

SOROTEC MPPT Solar charge controller

■Adopt advanced MCU microprocessor control technology.
■12V/24V/48V self detect to choose output voltage.
■Advanced MPPT T echnology, High converting efficiency higher than 97% for minimizing energy loss.
■Capable to parallel in output, to expand capacity easily.
■Reversed current protection at night, over voltage and reverse polarity protection.
■Capable of selecting different charging mode for various types of batteries.
■Capable of connecting additional DC load for wider applications.
■Three stage charge control system(bulk, absorption, and float mode) with optional temperature compensation
■LED indicators display charge status in real time, Optional LCD digital display.
■Pulse Width Modulation (PWM) technology combined with a multi-stage charge control algorithm leads to superior charging and enhanced battery performance.
■selectable external LCD display.

Learn more about 12v mppt solar charge controller

The rise of home solar power system in the rural areas, not only bring a stable income to the farmers, but also use rural areas resources effectively. Let barren hills, courtyards and roofs are used properly. It is precisely because of these strong conditions, so that home solar power system in rural areas has great development potential.

1.Effectively improve the living environment of rural areas
Macroscopically, the photovoltaic industry has a great significance to optimize the structure of energy consumption, solve the contradiction between energy supply and demand, promote energy conservation and emission reduction, and protect the environment. Microscopically, solar power generation from the construction to the grid generation, there is no waste and no energy consumption, but also can continue to generate electricity. Solar power projects in rural areas will be more effective in promoting energy-saving emission reduction, will guide more families to use new energy sources, so as to better protect the environment.

2.Increase the income
Home solar power system in rural areas is mainly composed of photovoltaic power station, roof solar power stations, agricultural greenhouse solar power station, barren hills power station and so on rural household solar power, for now, is the most widely used is rooftop solar power systems. The main benefit is composed of the saved electricity fees + surplus electricity sale income + subsidies. Its main advantage lies in stable monthly income.

3.Promote the healthy development of photovoltaic industry
With the gradual depletion of traditional energy sources, the deterioration of the environment, the use of new energy sources will become the mainstream in future. Compared with western countries, Chinese new energy development is far behind. While the rural area has a large inventory of greenhouse roof space, and water resources, rich hills, is an important market for photovoltaic power generation, so the PV development in rural areas will make Chinese new energy utilization and development strive for further improvement.

SSP3115C Low Frequency Pure Sine Wave Solar Inverter System For Home

Key Features:
1.Built-in MPPT solar controller
2.Pure sine wave output
3.Low frequency design.
4.The charging current is big up to 85 Amp
5.Output power factor:s 0.9-1
6.Automatically transfer between battery and line modes
7.Microprocessor control guarantees high reliability
8.Remote control function
9.Four-steps intelligent charging control to recharging time
10.Bypass and bypass voltage regulation function
11.With AVR function (optional)
12.Mains/solar output priority level for the customer to choose .
13.Mains/solar/ mains & solar charging three mode of priorities for the customer to choose .
14.Battery type can choose from 0-9

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The advantages of solar power is obvious, but there is always a misunderstanding of everyone. Do solar panels produce radiation?
Solar power generation convert solar energy directly into DC power through the characteristics of semiconductor, into direct current power, and then convert DC power into alternating current which can be used by load. There is no chemical change and nuclear reaction, so solar power will not have short wave radiation. While the commercial solar inverter is just a common electronic products, althrough there is the IGBT or a transistor inside, only with dozens of switching frequency, but all the solar inverters have a metal shell, which can greatly shield the radiation, and in accordance with the provisions of the global electromagnetic compatibility certification.

What is radiation?

The meaning of radiation is very broad, light radiation, electromagnetic radiation, particle flow is radiation, heat is radiation. So it is clear that we are in a variety of radiation.

What kind of radiation is harmful to people?

In general, people say “radiation” refers to the harmful effects of radiation on the body’s cells, which may cause cancer, or which has a high probability of causing genetic variation. These radiation generally is short wave radiation and some high energy particle flow.

Wi-Fi VS solar power system, which radiation is higher?

Wi-Fi radiation has been criticized, many pregnant women are far away from it. Wi-Fi is actually a small LAN, mainly to do data transmission. As a wireless device, the Wi-Fi has a transmitter that does produce electromagnetic radiation around it. However, the average Wi-Fi operating power between 30 ~ 500 MW, which is small compared to ordinary mobile phone (0.125 ~ 2 watts). Compared to mobile phones, Wi-Fi devices is far away from the users, which radiation density is much smaller. If you really afraid of radiation, just put down your phone.

SSP3111C 1-2KVA Modified Sine Wave Solar Power Inverter For Home With PWM Solar Charge Controller

1.Built-in PWM solar charge controller.
2.Modified sine wave output.
3.High frequency design.
4.Optional input voltage range.
5.Full automatic and silent operation.
6.Automatic charging.
7.Auto change AC-DC.
8.Over-load protection.
9.Automatic restart.
10.Three-steps intelligent charging control to recharging.
11.LCD display, audible and visual alarm.

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The power supply of the data center can not be interrupted for a moment, even if only a few seconds interruption may also cause significant data loss or damage to the equipment, and even affect the normal operation of the data center, causing serious economic losses. With the rapid development of information technology and related industries, data center UPS power supply system has become a reliable guarantee for the operation of data center.

With the development of industry and the wide application of computer technology, more and more data centers need to be protected by data center UPS power supply system. For the data center, modular UPS system is not only as a whole product to continue supplying power to the load after power failure, but as a high reliability and high intelligent power supply platform, comprehensive protection for the entire data center, not only can provide the backup time, also can improve the quality of power grid. Therefore, UPS for data center as an important peripheral of the computer, plays an important role in the protection of the load, improving the quality of power, and preventing the damage caused by the power grid.

Because UPS for data center is a perennial uninterrupted equipment, improve the efficiency of IDC UPS is the key factor to reduce the energy consumption of the data center. The efficiency of each 1% increase, the annual electricity consumption will be very much. In addition, the heat loss of UPS will also be reduced, air-conditioning system will therefore energy saving. In the analysis of UPS system can be time-consuming, should take full account of the following factors:

1.There is a direct relationship between UPS efficiency and load rate
In general, the efficiency values given in the data center UPS technical parameters are derived from the rated load as well as other suitable system states, which represent the best efficiency that UPS for data center can achieve. However, very few UPS runs under 100% loads. When the load rate is low, the efficiency of UPS will be decreased obviously.

2.The efficiency of UPS system should not only consider the efficiency of the UPS itself
Because of the different topology or technology, different UPS have great difference in system configuration. For example, the UPS with IGBT rectifier, can meet the system requirements without the filter. The 6 pulse rectifier UPS for data center, in order to meet the requirements of the system must be configured filter; online high frequency UPS can meet the power supply voltage requirements without increasing the output transformer, while low frequency UPS must increase the output transformer to meet the voltage requirements. Therefore, in the analysis of the efficiency of UPS system, the overall system efficiency of UPS for data center, including its auxiliary equipment (such as filters, isolation transformers, etc.) should be considered.

SOROTEC MPS9335C 10-300KVA Modular type UPS

Model: 10-1200KVA
Nominal voltage: 380/400/415VAC
Output power factor: 1

MPS9335C series Modular type UPS is modular online UPS for sensitive equipments. The single cabinet power rating covers from 10KVA to 300KVA which delivers the best of combination of reliability, hot-swappable and flexibility. With the latest IGBT three-level technology and DPS control, MPS9335C achieves a high input power factor, low THDi Modular design with N+X redundancy and online hot swapping, easy to expand the capacity Full DSP control of high stability, reliability and safety Integrated IGBT module with improved performance and reduced size.

Applicaitons:

IDC (Internet Data Center) , computing center, ISP (Internet Service Provider ),Telecom,Finance bank and securities,Tax, hospital system, industrial automation, precision equipment, etc.

Please feel free to contact us, your inquiry will be replied within 24 hours.