带MPPT的光伏水泵系统转子磁场定向矢量控制技术  

Study on Rotor Flux-orientation Control Strategy for Photovoltaic Pump System with MPPT

作　　者：王继东[1] 苏海滨[1] 王玲花[1] 常瑞[1] 

机构地区：[1]华北水利水电学院电力学院,河南郑州450011

出　　处：《节水灌溉》2010年第9期43-47,共5页Water Saving Irrigation

基　　金：河南省科技攻关资助项目(0524260049);华北水利水电学院青年科技基金(HSQJ200514);华北水利水电学院高层次人才科研启动项目(2008)

摘　　要：针对节水灌溉用光伏水泵系统的应用特点,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。构建了比例积分控制转速外环和电流内环的双闭环控制结构,并利用电导增量法实现了光伏发电的最大功率点跟踪控制。仿真与实验结果表明系统具有较好的动态响应性能和带负载能力,验证了采用的系统结构和控制策略的有效性和可行性。Aiming at the characteristics of the photovoltaic pump system for water saving irrigation,a new function inverter,which can drive general pump is developed.It combines the technologies of the inverters based on space vector pulse width modulation（SVPWM） and vector-controlled induction motor.In order to obtain high-performance characteristics,a double close-loop control is constructed by the outer speed loop and the inner current loop of the PI controller.Additionally,the maximum power point tracking（MPPT） method for PV cell based on incremental conductance approach is presented.PV generation system can track the maximum power point of the PV array and transform power induction motor.Simulation and experimental results prove the photovoltaic pump system,with proposed control strategy,processes good performance both in load ability and dynamic operation.

关 键 词：光伏水泵 空间矢量脉宽调制 感应电机 转子磁场定向 最大功率点跟踪 

分 类 号：TM464[电气工程—电器]