双馈电机直接功率控制方法比较及实验研究  

Comparison among Direct Power Control Methods for Doubly-fed Induction Generator and the Corresponding Experimental Study

作　　者：蒋涛 张永昌 徐东林[2] 焦健 王占扩[2] 张晟铵 JIANG Tao;ZHANG Yongchang;XU Donglin;JIAO Jian;WANG Zhankuo;ZHANG Sheng’an(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 100096,China;Power Electronics and Motor Drive Engineering Research Center of Beijing,North China University of Technology,Beijing 100144,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京100096 [2]北方工业大学电力电子与电气传动北京市工程研究中心,北京100144

出　　处：《电源学报》2021年第6期146-153,共8页Journal of Power Supply

基　　金：国家自然科学基金资助项目(52077002)。

摘　　要：传统的单矢量直接功率控制SDPC(single-vector-based direct power control)以其结构简单和动态响应快等优点在双馈电机DFIG(doubly-fed induction generator)并网发电控制中得到了广泛研究,但同时具有高采样频率、变开关频率和稳态脉动大等缺点。在传统矢量表直接功率控制的基础上,将占空比优化的思想引入双馈电机直接功率控制中,深入研究了双矢量直接功率控制,以期在取得较快动态响应的同时,减低稳态功率脉动。最后搭建了实验平台对3种直接功率控制方法的动静态性能进行了实验验证和比较,为实际应用中控制算法的选择提供了理论和实验依据。The conventional single-vector-based direct power control(SDPC)has been widely studied in the grid-connected power generation control of doubly-fed induction generator(DFIG)owing to the merits of simple structure and quick dynamic response.However,it also has drawbacks such as high sampling frequency,variable switching frequency and large steady-state ripples.In this paper,on the basis of the conventional vector table-based direct power control(DPC),the concept of duty cycle optimization is introduced into the DPC of DFIG,and the double-vector-based DPC is studied to achieve quick dynamic response while reducing the steady-state power ripples.Finally,an experimental platform was built to verify and compare the steady-state and dynamic performances of three kinds of DPC methods,providing theoretical and experimental reference for the control algorithm selection in practical applications.

关 键 词：双馈电机 直接功率控制 空间矢量调制(SVM) 

分 类 号：TM46[电气工程—电器]