永磁直驱风力发电中风力机模拟系统的研究  

A Research of Wind Turbine Imitation System in Direct-drive PMSG Wind Generation

作　　者：李军[1] 田野[1] 田华[1] 陈国柱[1] 

机构地区：[1]浙江大学,电气工程学院,浙江杭州310027

出　　处：《电力电子技术》2011年第1期33-35,共3页Power Electronics

基　　金：教育部新世纪人才资助计划(060512)~~

摘　　要：分析了风力机和直流电动机的工作特性,建立了风力机特性曲线的数学模型。在此基础上,提出功率外环转矩内环的双闭环直流电动机控制方法来模拟风力机特性,并通过控制永磁同步发电机使其运行在最大功率输出点。同时为检验风机控制系统的相关性能及研究风机对电网的影响,分"微风"、"阵风"、"强风"3种状态对风电场的工况进行初步模拟。通过实验可知该平台可方便应用于实验室条件下的风力发电技术研究。This paper analyzes the operation principles of wind turbines and direct current（DC） motors,and develops a mathematic model for the wind turbine.A new method is proposed to control the wind turbine imitation system below rating wind speed,which adopts a double close-loops control method containing an outside power loop and an inside torque loop to control the DC motor.In order to achieve maximum power,in the wind generator system,the PMSG has to be worked in an optimal speed by changing the given value of speed according to the current condition.And in order to test characteristics of the wind turbine control system,and study the influence of wind turbine system to grid power,some kinds of working conditions in the wind farm are imitated,called ＂breeze mode＂,＂gust mode＂ and ＂gale mode＂.The results testiy the proposed imitation platform can be effectively used in laboratory to study wind power generators.

关 键 词：风力机 永磁直驱 直流电动机 

分 类 号：TM315[电气工程—电机]