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Wind solar hybrid power supply system is mainly composed of wind turbine, photovoltaic array, solar charging controller, battery pack and inverter.

The wind turbine generates alternating current with the voltage of the system, and converts the solar charge controller into the DC power adapted to the system voltage, which is connected to the battery group and the solar inverter. PV array generates DC power that is compatible with system voltage, and is connected to battery pack and inverter by charging controller. The solar inverter converts the direct current input from the wind turbine and the PV array to 220V and 50Hz alternating current to provide AC load. The battery pack stores spare power which is not consumed by the load. When the wind turbine and PV array power generation is insufficient, the power consumption of the load is supplemented by the battery pack. When the wind turbine and the photovoltaic array do not generate electricity, the DC power stored in the battery group is converted to 220V, 50Hz alternating current to supply AC load through the solar inverter.

HW9110E 1-10KVA High Frequency Outdoor Online UPS

■SOROTEC Outdoor Intelligent High Frequency Online UPS provide continuous pure sine wave AC power supply for outside communications / network equipment.

■Double-conversion online design, high temperature resistant, anti-cold, sealing level for IP55; With the wide range of input voltage and frequency of input window (-45% +35% rated voltage and ± 10% rated frequency), in many remote areas of China after a severe test of the grid.

■This UPS is commonly used in the corner of the city, remote roads, mountains, bad environment, such as high temperature(+50 °C) / low temperature (-40 °C), severe dust, moisture,rain, mist erosion, very poor power quality (voltage longterm higher than 260V or less than 160V, frequency abnormal change) in the area.

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In the switching power supply technology, people the develop the electronic devices, while the development of switching frequency conversion technology to promote the switch power supply with growth rate of over two figures to become light, digital, small, thin, low noise, high reliability and anti interference. Switching power supply can be divided into two major categories: AC/DC and DC/DC.

Miniature low power switching power supply

Switching power supply is becoming more and more popular and miniaturized. Switching power supply will gradually replace all applications of transformers in life. The application of low power micro switching power supply should be firstly reflected in digital display meter, smart meter, mobile phone charger, etc.. At this stage, the state is promoting the construction of smart grid, the demand for power meter greatly improved, switching power supply will gradually replace the transformer in the energy meter above the application.

Reverse type series switching power supply

The difference between reverse type series switching power supply and common series switching power supply is the reverse series voltage switching power supply output voltage is negative; and because the energy storage inductor L only outputs the current to the load when the switch K is switched off, therefore, under the same conditions, the output current of the reverse series switching power supply is smaller than the output current of the common series switching power supply.

SP6U-48200 48V Switching Power Supply Embedded System

1.Constructed with standard 19 inch screen, which has the advantage of wide use.
2.The data center area and the installation cost can be saved due to its small size and the embedded installation.
3.Wide input voltage range (85-290Vac), the power grid is adaptable.
4.Perfect lightning protection.
5.Rectifiers are hot-pluggable. Easy and quick on line maintenance.
6.The rectifier uses DSP (Digital Signaling Processor) ology, makes the power density ran up to 14W/In3.
7.Battery management, prolongs the life of the battery well.
8.Have passed CE, UL, TLC, and other related certifications.
9.Excellent energy conservation and environmental protection.

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1.Using what kind of charging technology

At present, there are three technologies in the mainstream of the market, such as switching, PWM and MPPT. What kind of charging technology is used directly determines the quality and cost of the controller. The solar MPPT charge controller is better than the PWM, and the PWM is better than the switch type. And the price is also proportional, the technical difficulty is also more complex.

2.Whether the operation and installation of the solar controller is convenient

Because the workers at the construction site are often not very familiar with the use and characteristics of the products. Therefore, it is best to have the wiring diagram of the screen lamp controller on the shell of the street lamp controller, which is easy to install, clearly marked and easy to understand. If the installation is too cumbersome, it may cause the system to work unnormally, resulting in customer complaints.

3.The waterproof effect of solar street lamp controller

It is known that solar street lamps are installed outside and work all day. Perennial work in bad working environment, if waterproof is not good, it is easy to cause corrosion, rust, aging lines and a series of problems, which seriously affect the life of the controller. So waterproofing is an important index to judge a controller. The mainstream way is to use aluminum alloy shell and full potting treatment. IP68 is also the highest waterproof index at present.

4.Technical maturity of solar street lamp controller

In order to speed up the launch of new products and seize the market as soon as possible, many manufacturers rush to launch the market without the full maturity of products. They haven’t done any complete tests at all. Such products will inevitably encounter many technical problems. So when we choose the solar street lamp controller, we need to know the company’s previous product information to analyze the maturity of its product technology.

SOROTEC Solar MPPT Charge Controller

Although the development situation is good, the energy storage industry still faces many problems. The first is the strong support of the government. For our country, although the party and the state attach great importance to the development of energy storage industry, the State Council has established energy storage as one of the 9 key innovative areas, and one of the 20 key innovative directions. However, the energy storage industry has never been warmed because of the lack of the support policy.

Of course, the government’s support is on the one hand, the most important thing is technology, how can we get the power we want in the efficient way?

At present, the energy storage technology is divided into three major categories: physical energy storage, chemical energy storage and other ways of storage energy (such as electromagnetic energy storage, phase change energy storage, etc.). Compared with physical energy storage, the application scene of chemical energy storage is more extensive; compared with the new technologies such as superconducting energy storage, chemical energy storage technology industrialization is more mature. Therefore, chemical energy storage has become the focus of the world energy industry development and innovation, and the innovation of chemical energy storage is inevitable to the development of new battery materials, power quality problems caused by the use of a large number of UPS battery and inverter is becoming more and more serious, such as harmonics, flicker, voltage sags, temporarily will not balance and so on, among which the harmonic problem is more prominent.

The main reason for harmonic generation is the use of UPS battery. UPS battery has become the key technology of chemical energy storage. Compared with the power grid, it is a nonlinear load. It will generate a large number of harmonics when working. As an example of configuring the UPS of 6 pulse rectifier, the input power factor is generally about 0.75, and the harmonic is more than 30%. Harmonic reduces the efficiency of production, transmission and utilization of electric energy, resulting in overheating, vibration and noise, and insulation aging, shortened service life and even failure. At the same time, it causes the local parallel resonance or series resonance of the power system to make the harmonic content magnify and cause the battery to burn down. The harmonic will also cause the relay protection and the automatic device misoperation, which makes the electric energy metering confusion. For the external power system, the harmonics can cause serious interference to the communication equipment and electronic equipment. It can be seen that for harmonics and other power quality problems, we must not neglect. We have stored a lot of energy through advanced technology, but may be faced with unusable situations.

HP9330C 20-80KVA High Frequency IGBT Online UPS

■ Advanced IGBT UPS Rectifier technology,Input power factor: 0.99.
■Input THDi < 3%.
■The efficiency of the machines is as high as 94%.
■Connect up to 8 units in parallel for maximum flexibility ( no parallel kit required ) , and compatible to battery share in the parallel mode , which helps the customer to extend the system capacity with lowcost.
■ Intelligent management of battery charging and discharging.
■Twin-channel line input.
■ Large LCD Graphical display panel , convenient for operation.

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The solar inverter is a very important equipment of solar power system, the main role is to send out DC from PV modules into alternating current, in addition, the inverter also have the functions of detection component, power cable operation state, communication and external communication, system security and so on. In the standard NB32004-2013 of the photovoltaic industry, the inverter has more than 100 strict technical parameters, and each parameter is qualified to get the certificate. The state quality inspection administration will also checks on the protection of solar on grid inverter products every year, connecting contact current, solid insulation withstand voltage, rated output, conversion efficiency, harmonics and waveform distortion, power factor, DC component and AC output side / undervoltage protection 9 items were tested. A new inverter, from development to production, need more than two years, in addition to the under voltage protection function, inverter has many little-known high-tech, such as leakage current control, thermal design, electromagnetic compatibility, harmonic suppression, control efficiency and so on, need to invest a lot of manpower and material resources to development and testing.

Now is the winter, many people are worried about the inverter can withstand cold, actually there are few inverter failed because of cold weather. The most important problem of the inverter is the heat dissipation, by the report of world famous BCC survey, the reason of most of the current electronic products failure 55% is due to heat dissipation was not done well, the reliability of electronic devices the work is very sensitive to temperature, the temperature in 70-80 degrees every increase of 1 degrees, the reliability will decrease by 5%. High temperature will shorten the life of the inverter and reduce the reliability of the machine.

IG3115CS 1-12KW LCD Pure Sine Wave Inverter

■Pure sine wave output
■Pure sine wave output
■The charging current is big up to 85 Amp
■Output power factor:s 0.9-1
■Well accept generator’s output
■Full automatical and silent operation
■Automatically transfer between battery and line modes
■Microprocessor control guarantees high reliability
■Remote control function
■Four-steps intelligent charging control to recharging time
■Bypass and bypass voltage regulation function
■Could be setting frequency by LCD display with color screen
■Battery type and charge current can be select

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