摘要
Abstract
Dynamic Voltage Compensator ( DVR) can be used to handle the dynamic power quality problems in distri-bution network, such as voltage sags and voltage unbalance, and the parameters of the output filter will have important affect on the voltage sag compensation results.In this paper, the parameter design method of the output filter of a cas-caded H-bridge based DVR applied in medium-voltage distribution grid is studied.Through the analysis of the distri-bution of inverter output voltage in the capacitor and inductor, and derives the relation between the value of induct-ance , capacitance and the voltage of inductance, capacitor, considering the relation of the low pass filter resonance frequency ,DVR equivalent switch frequency and system frequency, and calculates the value of capacitance and in-ductance.Combined with an examples, specific implementation steps are given, the correctness and validity of the de-sign method of filter parameters proposed in this paper are verified by simulation.关键词
动态电压补偿器/滤波器参数/逆变器输出电压分配/开关频率Key words
dynamic voltage compensator/filter parameters/distribution of the inverter output voltage/switching fre-quency分类
信息技术与安全科学
