电力系统自动化2012，Vol.36Issue(18)：128-133,6.
三相电压型PWM整流器双开关表直接功率控制策略
A Double Switching Table Based Direct Power Control Strategy for Three-phase Voltage Source PWM Rectifiers
摘要
Abstract
Firstly, an improved strategy of direct power control (DPC) is proposed to solve the complexity problem of sector determination and reactive power cyclical fluctuation problems under the traditionl DPC strategy in three-phase voltage source pulse width modulation (PWM) rectifiers. The improved strategy adopts two switching tables and chooses the different ones in accordance with the reactive power errors. Then the new algorithm of sector determination is presented aiming at avoiding the complexities involved with coordinate transformation and arctangent function. Furthermore, the principle of selecting the switching tables is provided to reduce the switching losses and enhance the reactive power response speed. Finally, a simulation model is established under MATLAB/Simulink environment to compare with the results obtained from both the proposed and the traditional DPC strategies. The simulation results show that the proposed strategy has much lower total harmonic distortion (THD) rate at the AC side, meanwhile the response time for both active and reactive powers reaching the steady state is reduced by 38.5 % as compared with the traditional approaches.关键词
三相整流器/脉冲宽度调制/电压源型变换器/直接功率控制/谐波总畸变率/双开关表Key words
three-phase rectifier/pulse width modulation (PWM)/voltage source converter/direct power control/harmonictotal distortion (THD) rate/double switching tables分类
信息技术与安全科学引用本文复制引用
黄晶晶,张爱民,陈晓菊,张杭,王建华..三相电压型PWM整流器双开关表直接功率控制策略[J].电力系统自动化,2012,36(18):128-133,6.基金项目
国家自然科学基金资助项目（51177126）. （）
