新型电励磁双凸极电机转子极数对电机性能影响  

Influence of Rotor Pole Number on Motor Performance in Novel Doubly Salient Motor

作　　者：贾宛英 花玉梦 王明杰 刘小梅 邱洪波 Jia Wanying;Hua Yumeng;Wang Mingjie;Liu Xiaomei;Qiu Hongbo(School of Electrical and Information Engineering Zhengzhou University of Light Industry,Zhengzhou 450000 China)

机构地区：[1]郑州轻工业大学电气信息工程学院,郑州450000

出　　处：《电工技术学报》2025年第8期2418-2429,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金项目(52177063);河南省科技攻关项目(222102320074)资助。

摘　　要：电励磁双凸极电机(DSEM)具有结构简单、制造成本低、可靠性高等优点,在电动汽车、航空航天等领域具有较好的应用前景,然而由于其转矩脉动较大、转矩密度不高,一定程度上限制了其发展应用。为了提高转矩性能,该文提出一种新型DSEM的拓扑结构,通过改变绕组连接形式和定转子极数配合,提高电机的转矩密度,并降低转矩脉动。分析了新型双凸极电机的工作机理,详细阐述了新型双凸极电机的定转子极数配合方法与电枢绕组形式,在此基础上根据磁场调制机理分析了定转子极数与磁场谐波及电磁转矩之间的联系,研究了不同转子极数对电机电磁性能的影响。最后,制作了一台新型18/11极双凸极电机样机,实验验证了理论分析的正确性和新型双凸极电机拓扑结构的优越性。The doubly salient electric-excited motor has many advantages such as a simple structure,low manufacturing cost and high reliability,making it a good candidate for applications in electric vehicles,aerospace,and other fields.However,its large torque ripple and low torque density limit its development and applications.This paper proposes a new topology structure for the doubly salient electromagnetic machine(DSEM).The topology structure and working mechanism of the proposed DSEM are analyzed in detail.The combination of stator poles and rotor poles is elaborated,and the winding method of armature windings is described with the influence on the harmonics of EMF.The relationship between the pole-combination and harmonics of the magnetic field,together with the output torque,is investigated according to the magnetic field modulation mechanism,and the air-gap flux density harmonics of 18/10 and 18/11 DSEMs are obtained by finite element analysis.The influence of pole combination on motor characteristics is analyzed by finite element analysis,including the no-load electromagnetic performance,the torque features,and the loss characters,which shows the superiority of the DSEM with odd-number rotor poles.Finally,a prototype of the new 18/11 DSEM is manufactured and tested.The results show that due to the new winding method,the flux in armature windings changes bipolar,resulting in high sinusoidal flux linkages and,thus,a high sinusoidal EMF.The DSEM with odd-number rotor poles has more effective space magnetic harmonics than that with even-number rotor poles,almost with odd orders,resulting in higher output torque.Besides,due to the offset of even-order time-harmonics,the DSEM with odd-number rotor poles has higher sinusoidal EMFs and lower torque ripples.In addition,different rotor poles show different characteristics,as seen from the simulation results.The following conclusions can be drawn.(1)By adjusting the winding method of the field winding and the armature winding,the new type of DSEM realizes the bipolar change o

关 键 词：电励磁双凸极电机 磁场调制机理 极数配合 电磁转矩 

分 类 号：TM303[电气工程—电机]