适用于无轴承开关磁阻电机的新型升压功率变换器

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极双绕组宽转子齿无轴承开关磁阻电机驱动系统，通过Matlab/Simulink系统仿真和实验平台，验证了该功率变换器的可行性和有效性。

New Boost Power Converter Suitable for Bearingless Switched Reluctance Motor

Aiming at the fact that the excitation current build-up speed of the bearingless switched reluctance motor is too slow during commutation, this pap er proposes a simple structured boost power converter, when the motor is commutati-on,it uses the winding demagnetization en ergy to quickly establish the excitation current for the latter phase winding, and r-ealizes the low torque ripple operation of the motor on the basis of ensuring the stable suspension of the motor. The topol-ogyand working status of the powe r converter are analyzed. On this basis, a 12/8-pole dual -winding wide rotor tooth beari-ngless switched reluctance motor drive system based on the new boost power converter is constructed, Through Matlab/Sim-ulink system simulation and experiment platform, the feasibility and effectiveness of the power converter are verified.