SOROTEC UPS

Electric vehicle as a development prospect of the broad green transport, the future will be very rapid pace of popularization, the future of the market is also very huge market prospects. In the context of the global energy crisis and environmental crisis is serious, the Chinese government actively promote the application and development of new energy vehicles, charge for power plants as required for the development of electric vehicles an important supporting infrastructure, with a very important social and economic benefits. A campaign to build an  220v EV charger  / replacement station is already in the country. The whole system is composed of four parts:  portable electric vehicle charger , concentrator, a battery management system (BMS), charging management service platform. 220v electric car charger , the control circuit is realized by the embedded ARM processor, the user can self card user authentication, balance inquiries, billing inquiries, can also provide voice output i

Now in China, the charging station infrastructure construction is in peak, the attention of the government and enterprises in the charging station professional services is recharge or changing the power of choice, the China charging station integrated services have yet to be developed. 1, charging station successful operation case: China existing two largest most mature electric vehicle charging station is Beijing Olympic Games charging stations in the Shanghai World Expo and charging stations, the two charging stations at present is for electric city bus to provide fast battery replacement service, two charging stations are currently does not belong to the formal business operations, but governmental organizations under the pilot run. After two charging stations in common is dominated by a group of local bus operation, charging station founded and funded by a major national special fund and the place, running electric bus ownership bus group, Beijing Olympic charging station power

The  EV DC charger  belongs to the power distribution network, the communication mode and distribution automation are often considered together. Communication is one of the key and difficult points in the distribution network automation, application communication of different regions and different conditions is different, specific to the  EV fast charger , the modes of communication are wired and wireless: 1.Wired communication mode Wired Ethernet (RJ45 cable, optical fiber, industrial serial bus (RS485), RS232, CAN bus). Wired Ethernet has the main advantage of reliable data transmission, large network capacity, and the shortcomings of the wiring is complex, poor scalability, high cost of construction, poor flexibility. Industrial serial wire (RS485, RS232 and CAN wire) has has the advantages of reliable data transmission and simple design. The disadvantage is that the network is complex, poor scalability, high construction cost and poor flexibility, low communication capacity. 2

With the continuous development of various new technologies,  solar powered inverter  faces a variety of challenges, mainly in the grid performance, protection functions and electromagnetic compatibility, etc.. Grid connected performance is to improve the efficiency of the grid, eliminate the DC component, reduce the current harmonics and so on. Electromagnetic compatibility is to control the voltage fluctuations, reduce electromagnetic radiation, improve the degree of interference and so on. In addition, need to consider that it shold be fast and smooth in the process of switching between the solar inverter and the city power. The above aspects are the main aspects of how to evaluate the  solar powered inverters , if several performance metrics of an inverter is very superior, then will create a very good operating environment to the solar power system, and will also provide indirectly income to power supply company.

Solar panels inverter systems  are composed of solar cell, solar inverter, storage battery and controller. The solar cell array increases the area of receiving light, which improves the efficiency of converting solar energy into direct current. The controller is designed to extend the life of the battery and the use of the inverter. The inverter plays the role of converting the DC power to AC, and the DC can supply power to AC load through the inverter. The solar inverter is now divided into two categories, which are independent solar inverter and grid connected solar inverter. Through reliability, rated output capacity, inverter efficiency, starting performance, harmonic distortion and output voltage stability to evaluate a independent inverter. While the grid connected inverter is mainly used in peak shaving PV power station and rooftop solar power systems, thus requiring the sine wave output current of the grid connected inverter and grid voltage should be in the same frequency

The conversion efficiency of the  solar powered inverter  is the efficiency of the converse the electric power from the solar panel to the electric system. In the solar power system, the inverter play the role of converting the DC power from the solar panels into AC, and transfer power to the power grid. The higher conversion efficiency of inverter is, the more electricity to sale or use can be more. There are two major factors of inverter efficiency: one is that, when the DC current transfer to AC sine wave, need to use power semiconductor circuit of direct current to switch (a very short period of time turn-on and cut-off), then power semiconductor may generate heat, resulting in a loss. By improving the design of the switch circuit, the loss can be reduced to the minimum. The other factor is to improve efficiency by the inverter control experience. The output current and voltage of the solar panel will change with the sunshine and temperature. The inverter can control the current