基于电流源型逆变器驱动的五相永磁同步电机控制策略研究  

Investigation on Current-source Inverter Based Five-phase PMSM Control Scheme

作　　者：杨士杰 郑萍[1] 佟诚德[1] 隋义[1] 王明峤 YANG Shijie;ZHENG Ping;TONG Chengde;SUI Yi;WANG Mingqiao(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2024年第7期2843-2852,I0027,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51991385)。

摘　　要：在现代电机驱动系统中,采用电流源型逆变器控制方案可有效提升系统可靠性,降低电机电流谐波含量,并提升电磁兼容性能。电流源型逆变器拓扑采用电感元件作为母线储能装置,对于功率回路中的短路故障具有较强的抵抗能力。同时,逆变器输出侧并联滤波电容网络,实现对高频谐波的旁路作用。该文对五相电流源型驱动系统控制策略进行研究,采用五相半桥型逆变器拓扑结构,电机绕组采用星型连接方式以限制零序电流,给出基波与谐波电流矢量空间分布特征,提出双平面矢量脉宽调制策略,有效抑制3次谐波电流。考虑到逆变器输出侧CL型负载可能引起的谐振问题,采用基于电机电流的有源阻尼策略,降低谐振电流分量,提升系统稳定性。最后,通过实验验证所提控制策略的有效性。Current-source inverter(CSI)is considered as a promising candidate in modern drive systems,for its higher reliability,lower current harmonics,and improved electromagnetic compatibility(EMC)performance.The dc-link inductor is employed in the CSI topology as the energy storage element,which exhibits better resistance capability on the short-circuit fault.Filtering capacitors are connected in parallel with machine windings on the output terminal to bypath the switching harmonics.The five-phase CSI-based machine control scheme is investigated in this paper.The five-phase CSI with half-bridge topology is utilized and the windings are connected to the neutral point to eliminate the zero-sequence current.The mapping of fundamental and 3rd harmonic vector planes is presented and the synchronous vector modulation technique in dual spaces is proposed to suppress the 3rd harmonic current.In concern of the CL resonance phenomenon in CSI,the active damping strategy is proposed based on the phase current feedback to attenuate the resonant components and improve stability performance.Experiments are performed to validate the proposed schemes.

关 键 词：五相永磁同步电机驱动 电流源型逆变器 电流型空间矢量调制 CL谐振 有源阻尼 

分 类 号：TM351[电气工程—电机]