基于组合算法的混合励磁磁通切换电机最大转矩铜耗比控制  

Maximum Ratio of Torque to Copper Loss Control of Hybrid Excited Flux Switching Motor Based on Combination Algorithm

作　　者：李帅 丁文[2] 李可[2] Li Shuai;Ding Wen;Li Ke(State Grid Shanxi Electric Power Research Institute,Taiyuan,030001,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an,710049,China)

机构地区：[1]国网山西省电力公司电力科学研究院,太原030001 [2]西安交通大学电气工程学院,西安710049

出　　处：《电工技术学报》2022年第7期1654-1665,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51777161,52077164)。

摘　　要：混合励磁磁通切换电机(HEFSM)具有永磁磁通切换电机和混合励磁同步电机的优点,通过调节励磁电流实现了调节气隙磁场的目的,这类电机在工业界尤其是电动汽车领域有着广泛的应用前景。该文提出一种针对HEFSM全速范围的优化最大转矩铜耗比(MRTC)控制策略。在低速恒转矩区域,采用优化的励磁电流来提高带负载能力,使铜耗最小,相比励磁电流与电枢电流随机组合策略和零励磁电流控制策略具有更快的响应速度。在恒功率范围,建立电机铜耗的目标函数,以转矩、电流、电压和转速等为约束条件。优化后的负励磁电流和d轴电流不仅可以获得较高的转速和产生磁阻转矩,而且在一定的转矩值下,铜耗最小,实现了转矩与铜耗的最大比值,在扩展电机转速范围的同时提高了效率。最后搭建基于dSPACE1103的电机系统实验平台,验证所提出的控制策略的可行性和有效性。Hybrid excited flux switching machines(HEFSMs)have the advantages of permanent magnet flux switching motor and hybrid excitation synchronous motor.The air gap magnetic field can be adjusted by adjusting the excitation current.This kind of motor has a wide application prospect in industry,especially in the field of electric vehicles.In this paper,an optimized maximum ratio of torque to copper loss control strategy for HEFSM in full speed range is proposed.In the low speed constant torque region,the optimized excitation current is used to improve the load capacity and minimize the copper loss.It has a faster response speed than the random combination strategy of excitation current and armature current and the control strategy of zero excitation current.In the constant power range,the objective function of copper loss is established,and the constraints are torque,current,voltage and speed.The optimized negative excitation current and d-axis current can not only obtain higher speed and reluctance torque,but also achieve the maximum ratio of torque to copper loss under a certain torque value,which can expand the speed range and improve the efficiency.Finally,a motor system experimental platform based on dSPACE1103 is built,and the feasibility and effectiveness of the proposed control strategy are verified by experiments.

关 键 词：混合励磁磁通切换电机 铜耗 励磁电流 最大转矩铜耗比 优化 

分 类 号：TM351[电气工程—电机]