适用于无轴承开关磁阻电机的新型升压功率变换器  

New Boost Power Converter Suitable for Bearingless Switched Reluctance Motor

作　　者：向宇 杨艳 刘程子 刘泽远 XIANG Yu;YANG Yan;LIU Chengzi;LIU Zeyuan(College of Automation&College of Artificial,Nanjing University of Posts and Telecommunications,Nanjing 210046,China)

机构地区：[1]南京邮电大学自动化学院、人工智能学院,南京210046

出　　处：《微电机》2021年第11期82-87,共6页Micromotors

基　　金：国家自然科学基金项目(51607096);江苏省自然基金(BK20160896)。

摘　　要：针对无轴承开关磁阻电机在换相时励磁电流建立速度过慢,本文提出了一种结构简单的升压型功率变换器,电机在换相时,通过利用绕组退磁能量来为后一相绕组迅速建立励磁电流,在保证电机稳定悬浮的基础上实现电机换相时的低转矩脉动运行。分析了该功率变换器的拓扑结构以及工作状态,在此基础上,构建了基于该新型升压功率变换器的12/8极单绕组宽转子齿无轴承开关磁阻电机驱动系统,通过Matlab/Simulink系统仿真,验证了该功率变换器的可行性和有效性。Aiming at the fact that the excitation current build-up speed of the bearingless switched reluctance motor is too slow during commutation,this paper proposed a simple structuredboost power converter,when the motor is commutation,it used the winding demagnetization energy to quickly establish the excitation current for the latter phase winding,and realized the lowtorque ripple operation of the motor on the basis of ensuring the stable suspension of the motor.The topologyand working status of the power converter were analyzed.On this bas is,a 12/8-polesingle-winding wide rotor tooth bearingle-ss switched reluctance motor drive system based on thenew boost power converter was constructed,through Matlab/Simulink system simulation,the feasibility and effectiveness of the power converter were verified.

关 键 词：无轴承开关磁阻电机 转矩脉动 直接瞬时转矩控制 功率变换器 

分 类 号：TM352[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]