开绕组异步电机零序电流控制策略  

Zero-sequence current control strategy for open-end winding induction machine drive

作　　者：罗悍 张榴晨 杨淑英[1] 谢震[1] LUO Han;CHANG Liu-chen;YANG Shu-ying;XIE Zhen(National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology,Hefei University of Technology,Hefei 230009,China;School of Electrical and Computer Engineering,University of New Brunswick,Fredericton E3B5A3,Canada)

机构地区：[1]合肥工业大学可再生能源接入电网技术国家地方联合工程实验室,安徽合肥230009 [2]加拿大新布伦瑞克大学,弗雷德里克顿E3B5A3

出　　处：《电机与控制学报》2023年第3期42-55,共14页Electric Machines and Control

基　　金：国家自然科学基金(51877062);中国电力科学研究院有限公司研究项目(NYB51201902402);台达电力电子科教发展计划项目(DREK202004)。

摘　　要：零序电流抑制是共母线和共中线开绕组拓扑应用所必须解决的技术问题,为了探讨虚拟信号重构思想在零序电流控制上的应用,并对比各种虚拟信号重构控制方案间的差异。通过对虚拟三相电流和虚拟两相电流方案进行数学分析,建立了虚拟电流方案的统一数学模型,并依据控制系统频域分析方法,从理论上揭示了各方案间的性能异同。基于三相时延、正交时延、一阶全通滤波器、二阶低通滤波器、二阶全通滤波器以及巴特沃斯滤波器搭配微分的虚拟信号重构方案间具有类似的控制性能,在应用中可以互相替换;而基于二阶广义积分器的方案相较于上述各方案具有更突出的动态响应性能,但会在控制带宽过大时失去稳定。最后,通过共中线开绕组异步电机零序电流的控制对理论分析的正确性进行了验证。Zero-sequence current(ZSC)suppression is a technical problem that must be solved for application of the open-end winding machine with a common DC bus or with the common-mode connected DC buses,in order to explore the application of virtual signal reconstruction ideas to ZSC control and to compare the differences among various virtual signal reconstruction control schemes.Through mathematically analyzing the schemes based on both the virtual three phases and two phases,a universal mathematical model of the virtual current scheme was established.Based on the frequency domain analysis method of control system,the performance similarities and differences of each scheme were revealed theoretically.The virtual signal reconstruction schemes,which are based on three-phase time delay,quadrature time delay,first-order all-pass filter,second-order low-pass filter,second-order all-pass filter and Butterworth filter with differentiation respectively,have similar control performance and can be substituted for each other in applications;while the scheme based on second-order generalized integrator has more outstanding dynamic response performance than the above schemes,but will lose stability when the control bandwidth is too large.At last,these schemes were used to control the ZSC in an open-end winding induction machine drive with common-mode connected DC buses(CN-OEWIM),and the results verify the theoretical analysis.

关 键 词：虚拟信号重构 零序电流抑制 统一数学模型 共中线开绕组 异步电机 零序反电动势 

分 类 号：TM343[电气工程—电机]