两相无轴承电机开关损耗抑制算法  

Switching Loss Suppression Algorithm of Two-phase Bearingless Motors

作　　者：丁强 倪拓成 DING Qiang;NI Tuocheng(Jiangsu Wind Power Engineering Techology Center,Nanjing 210023,China;College of Electrical Engineering,Nanjing Vocational University of Industry Technology,Nanjing 210023,China)

机构地区：[1]江苏省风力发电工程技术中心,南京210023 [2]南京工业职业技术大学电气工程学院,南京210023

出　　处：《微电机》2022年第4期65-72,共8页Micromotors

基　　金：江苏风力发电工程技术中心开放基金(ZK19-03-06);南京工业职业技术大学引进人才起动基金(YK19-02-07)。

摘　　要：针对全桥功率拓扑以及传统SVPWM驱动算法在两相无轴承电机控制中存在的问题,本文研究采用两相三桥臂功率拓扑方案配合开关损耗抑制算法实现两相无轴承电机的驱动控制。首先,理论推导两相三桥臂功率变换器SVPWM算法。其次,在两相三桥臂SVPWM算法基础上,提出适合于高载频控制条件下的开关损耗抑制算法。第三,从开关器件工作损耗及相电流谐波含量等方面对传统SVPWM算法和开关损耗抑制算法进行对比。最后,在一台两相无轴承电机实验平台上验证所提开关损耗抑制算法的有效性。Aiming at the issues of full-bridge power converter and traditional SVPWM algorithm used in two-phase bearingless motors,this paper investigated two-phase three leg power topology as well as switching loss suppression algorithm to drive two-phase bearingless motors.Firstly,the SVPWM algorithm suitable for two-phase three leg power topology was derived theoretically.Then,on the basis of the SVPWM algorithm of two-phase three leg power topology,a switching loss suppression algorithm which was suitable for high carrier frequency control process was proposed.Subsequently,a comparison between traditional SVPWM algorithm and switching loss suppression algorithm was made in terms of power devices operational losses and phase current harmonic.Finally,the validity of proposed switching loss suppression algorithm was testified on an experimental platform of two-phase bearingless motor.

关 键 词：两相无轴承电机 两相三桥臂 开关损耗优化 空间矢量脉宽调制 

分 类 号：TM351[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]