T型逆变器馈电开绕组永磁同步电机SVM策略  

SVM Strategy of T-type Inverter Fed Open-end Winding Permanent Magnet Synchronous Motor

作　　者：杨晓杰 常俊晓 王学庆 YANG Xiao-jie;CHANG Jun-xiao;WANG Xue-qing(Stale Grid Zhejiang Power Supply Company Taizhou Branch,Taizhou 318050,China;不详)

机构地区：[1]国网浙江省电力有限公司台州供电公司,浙江台州318050 [2]四川大学,电气工程学院,四川成都610065

出　　处：《电力电子技术》2022年第6期57-60,共4页Power Electronics

基　　金：国家重点基础研究发展计划(973)(2013CB035603)。

摘　　要：这里提出了一种T型逆变器馈电开绕组永磁同步电机空间矢量脉宽调制(SVM)策略。该系统兼具了开绕组拓扑结构和T型三电平逆变器各自的优点。该方法基于参考电压矢量解耦的思想,将得到的五电平逆变器矢量图重新解耦成两个T型三电平逆变器独立控制,降低了控制复杂性,且能彻底消除共母线拓扑中的零序电压。提出了单个T型三电平逆变器的SVM控制策略,利用参考电压矢量相邻的3个分电压矢量进行电压合成,能够简单有效地保持中点电位平衡。通过实验验证了所提调制策略的有效性。A new space vector pulse width modulation(SVM) strategy of T-type inverter fed open-end winding permanent magnet synchronous motor topology is proposed.The system combines the advantages of the open-winding topological structure and the T-type three-level inverter.This method is based on the idea of reference voltage vector decoupling.The obtained five-level inverter vector diagram is re-decoupled into two T-type three-level inverter for independent control,which reduces the control complexity and can completely eliminate the zero sequence voltage in the common bus topology.A SVM control strategy for a single T-type three-level inverter is proposed,which uses three adjacent sub-voltage vectors of the reference voltage vector for voltage synthesis,can simply and effectively maintain the neutral point potential balance.The effectiveness of the proposed modulation strategy is verified through experiments.

关 键 词：永磁同步电机 开绕组 逆变器 矢量解耦 

分 类 号：TM351[电气工程—电机]