五相电机空间矢量算法研究  

Research on Five-phase Motor Space Vector Algorithm

作　　者：刘小虎[1] 袁志方[1] 周杨威 Liu Xiaohu;Yuan Zhifang;Zhou Yangwei(School of Electrical Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学电气工程学院,武汉430033

出　　处：《船电技术》2020年第8期5-10,共6页Marine Electric & Electronic Engineering

基　　金：海军工程大学2018年大学自主立项(425317Q033)。

摘　　要：五相电机空间矢量算法具有直流电压利用率高、线电压输出谐波小的优势,但是五相空间矢量算法非常复杂,在矢量合成时存在大量冗余电压,求解各矢量作用时间存在困难。本文首先将多个空间矢量划分为四类,大矢量、中矢量、小矢量和零矢量,引入中矢量与零矢量的作用时间比值系数K的概念,根据电压调制度M确定K值,进而确定其他矢量的作用时间,并以开关损耗最小为原则,给出了输出电压矢量的作用顺序。仿真结果验证了该算法的有效性。The five-phase motor space vector algorithm has the advantages of higher DC voltage utilization and lower line voltage output harmonics.However,the five-phase space vector algorithm is very complicated.There is a large number of redundant voltages in vector synthesis,and it is difficult to solve the time of each vector.Firstly in this paper,multiple space vectors are devided into four categories:large vector`,medium vector,small vector,and zero vector.Then the concept of the time ratio coefficient K of the action of the medium vector and the zero vector is introduced,and the value of K is determined according to the voltage modulation degree M,further more,the action time of other vectors are determined.Based on the principle of minimum switching loss,the action sequence of the output voltage vector is given.Finally,simulation results verify the effectiveness of the algorithm.

关 键 词：五相电机 空间矢量 扇区 调制度 开关损耗 

分 类 号：TM46[电气工程—电器]