address:No.10, Lane 669, Min Ta Road, Songjiang District, Shanghai, China
phone:189-1713-2726
email:qianghaibin@sh-yhcd.com
LCL filters are very widely used in the modern renewable energy industry, and can efficiently power quality of the electrical network. The filters are used to filter the switching frequency of the inverter. When reaching the target distortion level, the filters can save considerable costs. LCL filters are typically characterized by small loss, small size, light weight.
Rated Current Range: 10 ~ 1600A
Rated Voltage Range: 220 ~ 1140V
The advancement of power semiconductor switching device technology has promoted the rapid development of power electronic converter device technology. Various converter devices based on pulse width modulation (PWM) control have emerged, such as inverter power supplies, converters, etc. converters, and these converters have been widely used in various fields across the country. The three-phase voltage PWM rectifier has bidirectional power transmission and faster dynamic control response. Most of the power switching devices used in PWM rectifiers are IGBTs, which can achieve very high switching frequencies. Generally, the switching frequency is 2 ~ 15kHz. However, the high switching frequency of power switching devices will generate high-order harmonics, which will be injected into the power grid, causing harmonic pollution. In order to solve the problems, we generally choose LCL filters. The LCL filter can select smaller inductor and capacitance values to achieve satisfactory filtering effects from kilowatts to hundreds of kilowatts.
