基于动态扇区双开关表的PWM整流器直接功率控制系统  

PWM Rectifier Direct Power Control System Based on Dynamic Sectors Dual Switching Table Based PWM Rectifier Direct Power Control System

作　　者：赵焕[1] 袁文华[1] 朱安宏[1] 

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212018

出　　处：《电测与仪表》2014年第16期62-66,共5页Electrical Measurement & Instrumentation

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：传统PWM整流器的直接功率控制(DPC)系统中,在靠近基本电压矢量的位置,出现功率调节失控,导致网侧电流谐波含量较大。在PWM整流器功率数学模型的基础上,分析了电压矢量对有功功率和无功功率的影响,针对传统开关表下功率调节能力不稳定的问题,提出了动态扇区划分下的双开关表控制策略。该方法实现了功率调节的有效性,而且获得了更好的动态控制效果,更低的电流谐波含量。最后Matlab/Simulink仿真实验结果验证了该控制策略的正确性和实用性。The power will be out of control near the fundamental voltage vector in the traditional direct power control system, and it will lead to a high harmonic content in AC side. The influence of voltage vector on the active power and reactive power is analyzed on the basis of the mathematical model of PWM rectifier power. A control strategy with dual switch table in dynamic sectors has been presented in this paper, in view of the unsteady power regulation under the traditional switch table. The method will realize the effective power regulation, and obtain a better dynamic control performance and the lower harmonic current. Finally, Matlab / Simulink simulation results will verify the correctness and practicability of the control strategy.

关 键 词：PWM整流器 直接功率控制 动态扇区 双开关表 滞环 

分 类 号：TM464[电气工程—电器]