基于矢量控制的电励磁双凸极电机失磁容错运行转矩脉动抑制策略  

Fault-tolerant Control of Doubly Salient Electro-magnetic Machine Under Loss of Excitation Based on Vector Control for Torque Ripple Reduction

作　　者：熊磊 葛红娟[1] 周波[1] 蒋思远 魏佳丹[1] 周兴伟 XIONG Lei;GE Hongjuan;ZHOU Bo;JIANG Siyuan;WEI Jiadan;ZHOU Xingwei(Jiangsu Key Laboratory of New Energy Generation and Power Conversion(Nanjing University of Aeronautics&Astronautics),Nanjing 211106,Jiangsu Province,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China)

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学),江苏省南京市211106 [2]河海大学能源与电气学院,江苏省南京市211100

出　　处：《中国电机工程学报》2024年第16期6644-6655,I0029,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金(重点项目)(51737006,U2233205);国家自然科学基金(面上项目)(U1933115);国家自然科学基金(青年项目)(51907051)。

摘　　要：电励磁双凸极电机(doubly salient electro-magnetic machine,DSEM)在航空和电动汽车等领域具有广阔的应用前景,这些领域对可靠性有更高的要求。DSEM通过励磁绕组实现他励,其励磁故障是影响DSEM电动运行可靠性的重要方面。针对DSEM驱动系统的励磁故障,该文提出一种基于矢量控制的DSEM失磁容错运行转矩脉动抑制策略。首先,根据瞬时功率不变原则建立DSEM失磁后极坐标系下的转矩数学模型,该模型建立磁阻转矩与电流矢量的幅值和相角之间的关系。随后,基于该模型,以铜耗最小化为目标确立电流矢量的相角,通过控制电流矢量的幅值抑制转矩脉动,将所得的电流矢量变换后得到三相参考电流,进行闭环控制。最后,针对1台18/12极DSEM,通过实验验证所提方法的可行性和有效性。Doubly Salient electro-magnetic machine(DSEM)has a broad application prospect in the fields of aviation and electric vehicles,both of which have higher requirements for the reliability.DSEM with separate excitation is realized by excitation winding,whose excitation fault is an important aspect that affects the reliability of the DSEM driving system.Aiming at the excitation fault of DSEM drive system,this paper proposes a torque ripple reduction strategy based on the vector control for fault-tolerant operation of the DSEM.First,according to the instantaneous power invariable principle,the torque model of the DSEM under excitation-loss is set up in polar coordinate system,which establishes the relationship between the reluctance torque and the amplitude and phase of current vector.Then,the phase of the current vector is determined for copper loss minimization,and the torque ripple is reduced by controlling the amplitude of the current vector.The three-phase reference current is obtained from the transformation of the current vector,which is utilized for the current closed loop control.Finally,the experiments are implemented on an 18/12 pole DSEM to validate the feasibility and effectiveness of the proposed method.

关 键 词：电励磁双凸极电机 矢量控制 转矩脉动抑制 铜耗最小化 

分 类 号：TM301.2[电气工程—电机]