三相电压型PWM整流器的新型直接功率控制  

Modified Direct Power Control System of Three Phase Boost Type PWM Rectifier

作　　者：郭旭刚[1] 王苏敬[1] 孔龙飞[1] 王志良[1] 陆阳[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2016年第1期55-59,共5页Railway Locomotive & Car

摘　　要：为了改善传统直接功率控制无功功率不可控和交流侧输入电流畸变的弊端,重新对功率比较误差细化分析,在Matlab/Simulink环境下,搭建了基于三状态开关表直接功率控制系统的仿真模型,采用功率PI环代替了传统滞环比较器。仿真和试验结果表明,改善后的DPC系统对无功和有功都有良好的控制能力,使电网的输入电流更接近于正弦波,中间直流电压及功率纹波系数低,系统的性能得到了有效改善。The study analyzed the traditional direct power control（DPC）strategy,and the uncontrollable reactive power will increase the input current waveform＇s harmonics.In order to improve the control of the reactive power,in Matlab/Simulink environment,a modified direct power control system simulation model based on switch table with three state is built,and the simple PI control is used in the inner loop instead of the traditional hysteresis comparator in the classical DPC.Simulation and experimental results show that the modified DPC system has a good control capability of the active and reactive power,the input current is more sinusoidal,and the output of DC voltage ripple is lower.

关 键 词：开关表 整流器 直接功率控制(DPC) 

分 类 号：TM461[电气工程—电器]