Important parameters and characteristics of grid connected solar system inverters

Grid connected solar inverter is the access device which connect batteries to power grid. The working principle is that the convery electric energy to AC and transmitted to the power network. Plays a important role in grid connected power generation system, the three indicators of high efficiency, high power density, high reliability determines the quality of photovoltaic inverter. The parameters and performance of power grid connected inverter of different manufacturers are also not the same, especially the efficiency, which is directly related to the generating capacity of photovoltaic power plant. Here are the parameters of the data of grid connected inverter as a reference.
Parameters of grid connected solar system inverters
1.Output capacity: single phase 0.5-100KVA, three-phase 2-200KVA.
2.Output voltage: AC220 ±3%, 380 ±3%.
3.Output frequency: 50Hz ±0.05.
4.Waveform distortion rate: <5%.
5.Power factor: 0.8.
6.Overload capacity: overload 150%, 10S.
Characteristics of grid connected solar system inverters
1.The highest efficiency of 98.6%, the European efficiency of 97.5, MPPT efficiency of 99.9%.
2.Modular design, easy installation and maintenance.
3.Automatic selection of output power according to the input conditions (100%, 80%, 60%, 40%, 20%, 0%).
4.Filter out its own harmonic.
5.Low voltage ride through.
6.Over / under voltage, over / under frequency and over current protection.
7.Active and passive combination, anti-islanding.
8.Reactive power adjustable, power factor range from lead 0.95 to lag 0.95.
9.Adapt to the harsh environment of the power grid, the operating frequency of 50/60 ±4.5Hz.

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