四象限变流器的空间矢量解耦控制

摘要

本文介绍一种新型的基于空间矢量调制的三相电压型四象限变流器解耦控制,给出了基于虚磁链的功率估算式,设计了功率调节器参数,对有功功率调节器和无功调节器之间的相互耦合影响关系做了分析,并做了仿真研究。研究和分析表明,三相电压型四象限变流器基于空间矢量调制的解耦控制系统具有结构和算法简单、高功率因数、低谐波、开关频率固定等优点。%This paper introduces a novel decoupling control for four quadrant converter. The active and reactive powers are used as the pulse width modulated （PWM） control variables instead of the three-phase line currents being used. Moreover, line voltage sensors are replaced by a virtual flux estimator. The theoretical principle of this method is discussed. The results of exhibits several features, such as a simple algorithm, good dynamic response, constant switching frequency, and particularly it provides sinusoidal line current when supply voltage is not ideal.