基于SVPWM控制技术的Z-源逆变器在光伏水泵系统中的应用  

The Application of SVPWM Control for Photovoltaic Pump System Based on Z-source Inverter

作　　者：方月[1] 王继东[2] 

机构地区：[1]河南工程学院机械工程系,河南郑州451191 [2]华北水利水电学院电力学院,河南郑州450011

出　　处：《河南工程学院学报（自然科学版）》2009年第3期30-34,共5页Journal of Henan University of Engineering：Natural Science Edition

摘　　要：将具有独特的X型网络的Z-源逆变器应用于光伏水泵系统,利用逆变器桥臂直通状态实现直流侧升压.对Z-源逆变器的拓扑结构和工作原理进行了详细的分析;结合电压空间矢量PWM技术(SVPWM)和感应电机转子磁场定向矢量控制原理,设计了一种可驱动通用型潜水泵的光伏水泵新型变频调速系统.利用S imu link中的电力系统"S imPowerSystem s"模块库对所提出的系统进行了仿真研究.结果表明,该系统具有良好的静态和动态性能,验证了采用的系统结构和控制策略的有效性和可行性.This paper presents a study of control methods for Z - source inverters used in photovohaic pump system. The Z - source converter uses the shoot - through that simultaneously turns on both power switches in a leg in order to boost a DC - link voltage. A modified space vector pulse width modulation is described in detail for stepping up the DC -link voltage and generating a sinusoidal AC output voltage. It combines the technologies of the inverters based on space vector pulse width modulation （SVPWM） and vector - controlled induction motor. Simulation model was set up used ＂ SimPowerSystems ＂ in Simulink. Simulation results prove the photovohaic pump system, with proposed control strategy, processes good performance both in load ability and dynamic operation.

关 键 词：光伏水泵 Z-源逆变器 转子磁场定向 空间矢量脉宽调制 感应电机 

分 类 号：TM454[电气工程—电器]