Efficiency of solar energy inverter

Solar energy inverter efficiency refers to the demand for renewable energy, solar inverter market is growing. These inverters require extremely high efficiency and reliability. The power circuit used in the inverter is investigated, and the best choice for the switch and rectifier is recommended. The solar light is irradiated on the solar module connected in series, and each module contains a series of solar cells. The solar module generates a direct current voltage at an order of magnitude of several hundred volts, depending on the light condition of the module array, the temperature of the battery, and the number of modules connected in series.
The primary function of this type of solar energy inverter is to convert the input DC voltage to a stable value. This feature is achieved through a boost converter and requires a boost switch and a boost diode. In the first structure, the boost stage is followed by an isolated full bridge converter which is to provide isolation. The output on the second full bridge converter is used to convert the DC from the first stage to the full bridge converter into an AC voltage. The output is then filtered through an additional dual contact relay switch connected to the AC power grid network, which is designed to provide safe isolation in the event of failure and isolation at night and power grid. The second structure is non isolation scheme. Among them, the AC voltage is directly generated by the DC output voltage boost stage. The third structure using innovative topological structure of power switch and power diodes and the integration function in a special topology despite very low conversion efficiency of solar panels, inverter efficiency close to 100% as possible is very important. In Germany, installed in the South on the roof of the 3kW series module expects annual power generation 2550 kWh. If the inverter efficiency increased from 95% to 96%, the annual power generation can be more 25kWh. And the cost of using an extra solar module to generate the 25kWh is comparable to that of an inverter. Because the cost of the inverter is not doubled while the efficiency increased from 95% to 96%, so it is necessary to invest in a more efficient inverter. For the new design, the most cost-effective way to improve the efficiency of the solar energy inverter is the key design criteria. As for the reliability and cost of the solar energy inverter is the other two design criteria. Higher efficiency can reduce the temperature fluctuations on the load cycle, thereby improving the reliability, and thus these guidelines are actually associated. The use of modules will also improve reliability.

评论

发表评论

此博客中的热门博文

How to maximize the efficiency of your UPS

图片
1.Use of AC voltage regulator After using  UPS power supply , there is no need to add AC voltage regulator. If it must be added, it should be added to the front level of UPS, that is, the mains power first passes through the AC voltage regulator, then through the ups, and then to the load. 2.Battery balanced charging skills At present, valve regulated lead-acid battery (VRLA) used in many ups power supply is called maintenance free battery from the beginning, which gives users a misunderstanding that it seems that this battery is durable and does not need maintenance at all. Under this kind of misleading, many users have not carried out maintenance and management since they installed the battery. When the battery in UPS power supply meets the following conditions, the battery shall be charged evenly: when the terminal voltage is lower than the specified calibration voltage due to excessive discharge. For 12 V small sealed lead-acid batteries, the discharge calibration voltage is 10.
阅读全文

126th Canton Fair

图片
On Oct 15th 2019, as one of the most important trade promotion platforms for Chinese enterprises to expand the global market, Canton Fair in Guangzhou focused on highlighting innovation driven, and “independent brand” became a high-frequency word of Canton Fair. Xu Bing, a spokesman for the Canton Fair and deputy director of the China Foreign Trade Center, said that the domestic and foreign environment faced by China’s foreign trade development this year is more complex and uncertain. The majority of exhibitors accelerated quality improvement and innovation, and continued to make efforts in technology research and development, product innovation, brand cultivation, etc., with high technology, high quality, high added value and independent brand products emerging. Many independent innovative R & D products are welcomed by the market. At the same time, purchasers are less sensitive to price and pay more attention to the technology, brand, quality and service of products. In
阅读全文

The development of China electric vehicle charging pile

图片
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
阅读全文