摘要
介绍了开关磁阻电机(SRM)常用的不对称半桥型和H桥型功率变换器拓扑结构的工作原理,对比了两种功率变换器的能量比率、性价比、控制灵活性和对电机转矩的影响。实验所用SRM为8/6结构,额定电压为24 V。在相同的控制方式和实验条件下,对两种功率变换器驱动下,拖动转动惯量为3.08×10-2 kg·m2的惯性轮,以140 A的相电流起动,使电机转速从零加速到1 000 r·min-1的情况进行了实验。实验证明,H桥型功率变换器在起动时消耗的电功率小于不对称半桥型,而其平均起动转矩也大于不对称半桥型功率变换器。
The paper introduces the principles of the asymmetrical half-bridge type power converter and half-bridge type power converter which typically used for switched reluctance motor（SRM）,compares the energy ratio,cost-effective,control flexibility and the impact on motor torque of two power converters.The motor is 8/6 structure and the rated voltage is 24 V.In the same control and experimental conditions,the starting experiment of the motor which is drove by the two type power converters is done.In the experiment,the motor drags the moment of inertia is 3.08×10-2 kg·m2 inertia wheel to 1 000 r·min-1,with the phase current 140 A.The experimental verify that the electric power consumption of H bridge power converter is smaller than the asymmetrical half-bridge type power converter,and the starting torque is larger than the asymmetrical half-bridge type power converter.
出处
《电力电子技术》
CSCD
北大核心
2011年第3期35-36,43,共3页
Power Electronics
基金
河北省科技计划项目(09213903D)~~
关键词
开关磁阻电机
功率变换器
起动转矩
能量比率
switched reluctance motor
power converter
starting torque
energy ratio
