Satons LCL Filter

タイトルまたは説明

The Satons LCL filter is composed of an filter, a filtering capacitor, and a feedback reactor, which has the characteristics of small loss, small volume, light weight, and easy maintenance.



The inverter based on PWM control has the function of bidirectional power transmission, and its power switching devices are mostly used in IGBTs. IGBT has a high switching on/off frequency, but it also generates a large number of high-order harmonics. LCL filters can filter out the high-order harmonics, reduce voltage and current distortion levels, and select smaller inductors and capacitors to achieve satisfactory filtering effects, thereby improving power quality, reducing grid interference, and optimizing energy-saving effects.

Product Application

The advancement of power semiconductor switching device technology has promoted the development of power electronic converter technology, and various converter devices based on pulse width modulation (PWM) control have emerged, such as inverters, frequency converters, and other types of converters. These converters have been widely applied in various fields. The three-phase voltage source PWM rectifier has bidirectional transmission of electrical energy and fast dynamic control response. The current PWM rectifiers mostly use IGBT power switching devices, which can achieve high switching frequencies, usually ranging from 2kHz to *5kHz. However, the high turn-on and turn-off frequency of power switching devices can generate higher-order harmonics, which are injected into the power grid and cause harmonic pollution. To solve the problems encountered by LCL filters, we generally choose LCL filters. LCL filters can select smaller inductance and capacitance values to achieve satisfactory filtering performance between kilowatts.