直驱永磁风力发电系统建模与仿真方法研究  

Modeling and simulation of direct-drive permanent magnet wind power generation system based on PSCAD/EMTDC

作　　者：王林富 许丹枫 赵湖珊 郝露茜 徐剑冰 邱方驰 张斌 Wang Linfu;Xu Danfeng;Zhao Hushan;Hao Luxi;Xu Jianbing;Qiu Fangchi;Zhang Bin(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China;Nari-relay Engineering Technique Co.,Ltd.,Nanjing 211102,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]深圳供电局有限公司,深圳518000 [2]南京南瑞继保工程技术有限公司,南京211102 [3]武汉大学电气与自动化学院,武汉430072

出　　处：《电子测量技术》2019年第20期44-50,共7页Electronic Measurement Technology

基　　金：深圳供电局有限公司技术项目(090000KK52170013)资助

摘　　要：针对我国风机装机保持的快速增长形势,研究、分析了基于PSCAD/EMTDC的直驱永磁风力发电系统建模与仿真。基于电机原理和控制理论,对直驱永磁风机系统模块化建模;建立了dq坐标系下风力发电机模型,并将典型功率外环、电流内环双环控制策略应用机侧变流器,典型电压外环、电流内环双环控制策略应用网侧变流器。基于PSCAD/EMTDC平台搭建直驱永磁风机并网系统和控制策略,算例验证了模型和策略的有效性,结果表明:所建风机系统模型可通过桨距角控制保证风机安全,并实现最大风能捕获;机侧变流器控制策略能快速响应风速变化、实现指令值的快速跟踪,网侧变流器控制策略可保证变流器单位功率因数输出及直流侧电容电压恒定。Aiming at the rapid growth of wind turbine installed capacity in China,the modeling and simulation of direct-drive permanent magnet wind power generation system based on PSCAD/EMTDC are studied and analyzed.According to the principle of motor and control theory,the modular model of direct-drive permanent magnet fan system is established.Furthermore,the model of wind turbine in dq coordinate system is constructed,and the typical double-loop control strategy of power outer loop and current inner loop is applied to the machine-side converter,and double-loop control strategy of voltage outer loop and current inner loop is applied to the grid-side converter.Based on PSCAD/EMTDC platform,the grid-connected system of direct-drive permanent magnet fan and its control strategy are built.The simulation results show that the model of the fan system can ensure the safety of the fan through pitch angle control and achieve maximum wind energy capture;the control strategy of the machine-side converter can quickly respond to changes in wind speed and achieve fast tracking of command values;and the control strategy of the grid-side converter can ensure the unit power factor output and a constant capacitance voltage on DC side.

关 键 词：PSCAD/EMTDC 直驱永磁风力发电系统 模块化建模 控制策略 

分 类 号：TN98[电子电信—信息与通信工程]