双馈风机中随机PWM控制时的运行性能研究  

Research on the Operation Performance of the DFIG with Random PWM Controller

作　　者：邓应飞 杨丹 徐欢 马家庆 DENG Yingfei;YANG Dan;XU Huan;MA Jiaqing(The Electrical Engineering College of Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025

出　　处：《电工技术》2021年第6期18-20,共3页Electric Engineering

基　　金：贵州大学“SRT计划”项目。

摘　　要：为了获得双馈风机谐波更少的转子电流,基于PWM双馈风机机侧逆变器引入随机因子。该方法是在保证IGBT足够死区时间的前提下加上随机值、固定死区时在PWM生成的占空比加上随机值。仿真结果显示,加入随机因子的电流THD都比基本PWM控制的要小,表明该方法的合理性与有效性且适用于工程。In order to obtain the rotor current with less harmonics in the doubled fed induction generator(DFIG)system,random factors are introduced.In this method,the random value is added on the premise of enough dead time of IGBT,and the random value is added on the duty cycle generated by PWM when the dead time is fixed.The simulation results show that the current thd with random factor is smaller than that with basic PWM control,which shows that the method is reasonable and effective,and it is suitable for engineering.

关 键 词：双馈风机 转子电流 随机死区 随机PWM 

分 类 号：TM306[电气工程—电机]