双凸极永磁电机逆变电路中分裂电容电压偏差分析  

Analysis on the Voltage Offset Across Split-capacitor in Inverter for a Doubly Salient Permanent Magnet Motor

作　　者：李文广[1] 朱孝勇[1] 程明[1] 

机构地区：[1]东南大学,江苏南京210096

出　　处：《微特电机》2006年第10期17-19,22,共4页Small & Special Electrical Machines

摘　　要：介绍了一种12/8极双凸极永磁电机的基本结构、工作原理和静态特性,在此基础上研究了该电机逆变电路中直流侧分裂电容电压的变化,推导出了电容电压偏差的解析表达式并由此分析了产生电压偏差的原因,给出了一种通过优化正向开通角来补偿电压不对称的方法,最后通过数字仿真验证了理论分析的正确性。The basic structure, working principle and static characteristics of a 12/8 - pole doubly - salient permanent magnet （DSPM） motor are presented. Based on this, the disturbance of voltage across the split - capacitor in DC - link of inverter for the proposed motor is studied, including the derived analytical expression of voltage offset between the two capacitors and detailed analysis of the reason for it. Then, a method by regulating optimal positive turn - on angle to compensate voltage asymmetry is proposed, which is validated by the simulation results.

关 键 词：双凸极电机 永磁 分裂电容 逆变电路 

分 类 号：TM353[电气工程—电机]