基于SVPWM的直驱式风电系统网侧变换器控制策略  

Study on the Control Strategy for Direct-drive Grid Side Converter in Wind Power System Based on SVPWM

作　　者：朱晓琴[1] 秦生升[1] 

机构地区：[1]盐城工学院电气工程学院,江苏盐城224051

出　　处：《盐城工学院学报（自然科学版）》2012年第1期37-40,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：对基于SVPWM调制的直驱式风电系统网侧变换器的控制策略进行了研究,变换器采用了三相电压源型PWM结构,对其进行了分析并基于电网电压矢量定向控制,提出采用旋转轴电流线性化解耦控制策略的网侧变换器的数学模型,在双环控制中,采用了一种新型的PR控制策略。仿真结果表明,该系统运行稳定,动态响应快,输出直流电压稳定,且脉动很小,各项性能优良。It is researched of control strategy suitable for direct-drive grid side converter in wind power system based on SVPWM.The topology with PWM six bridge arms powered by three-phase voltage is adopted.A mathematical model of the grid side SVPWM converter is established.Based on grid voltage oriented vector,the control strategy with dq axis current linearization decoupling and a novel P＋resonant control strategies are adopted.The simulation results show that the system has excellent performance with the advantages of stable operation,fast transient response,stable output DC voltage and tiny ripple.

关 键 词：网侧变换器 线性化解耦 PR控制 空间电压矢量 

分 类 号：TM921.5[电气工程—电力电子与电力传动]