基于改进滞环电流控制的有源电力滤波器  

Research of APF Based on the Improved Hysteresis Current Control

作　　者：惠晶 姜海 

机构地区：[1]江南大学,江苏无锡214122

出　　处：《电力电子技术》2011年第12期104-106,共3页Power Electronics

基　　金：江南大学青年基金(JUSRP11022)~~

摘　　要：以往的电流滞环控制方式受所控制电流大小的影响较大,产生PWM的脉冲频率不固定会造成开关损耗和开关噪声较大,故需对电流滞环控制方案进行改进。此处在电流传感器检测出电流后加入一个幅值限制环节,能有效解决由异常电流波动引起的控制效果变差的问题,并且在PWM脉冲产生环节之前加入一个固定频率发生器环节,对PWM系列的频率进行控制。Matlab仿真及实验结果证明了该方法的可行性及有效性。The previous hysteresis current control mode is limited by the controlled current and the PWM pulse frequency is not fixed that causes much switching losses and switching noise.This paper improves the control scheme of the hysteresis current control by adding an amplitude limiting element after detecting the current by the current sensor, it could solve the problem that the control effect became ineffective which is caused by the abnormal current fluctuations.h also adds a fixed frequency generator before the PWM generator to control the frequency of the PWM series.The simulation and experimental results show that the effectiveness of the method is feasible.

关 键 词：有源电力滤波器 滞环电流控制 电流波动 

分 类 号：TN713[电子电信—电路与系统]