Research on Influence of Motor Parameters on the Negative-Salient Permanent Magnet Synchronous Motor  

作　　者：Fei Guo Qiu Chu Chunyan Li Tao Meng 

机构地区：[1]Department of Mechanical and Electrical Engineering,Heilongjiang University [2]IEEE

出　　处：《CES Transactions on Electrical Machines and Systems》2022年第1期77-86,共10页中国电工技术学会电机与系统学报（英文）

基　　金：supported in part by the National Natural Science Foundation of China under Grant 51307045;in part by the Natural Science Foundation of Heilongjiang Province of China under Grant LH2019E075;in part by the Fundamental Research Funds for the Heilongjiang Province Universities under Grant KJCX201915。

摘　　要：The d-axis inductance(Ld)of the negative-salient permanent magnet synchronous motor(NSPMSM)is larger than the q-axis inductance(Lq).Compared with the traditional motor,the NSPMSM has the characteristics of a high overload capacity,wide speed range,and preventing permanent magnet demagnetization.Positive d-axis current(id)is applied to control positive reluctance torque when running at base speed.When the motor is running at high speed,a relatively small id can achieve speed expansion and effectively expand the motor flux-weakening range.The use of a magnetic bridge to increase the Ld and a W-type permanent magnet to reduce the Lq is proposed in this article as a novel NSPMSM rotor structure.Firstly,the working principle of the NSPMSM was determined according to the equivalent magnetic circuit.Secondly,using the finite element method,the influence of motor structure on torque and speed performance of NSPMSM was analyzed,and the motor structure was optimized.Thirdly,the effect of the internal power factor angle on the performance of the two motors is analyzed.Finally,the short circuit simulation and analysis verified that the NSPMSM has a stronger short circuit current suppression ability without sacrificing overload ability.

关 键 词：Speed range inner power factor angle flux weakening TORQUE short-circuit current 

分 类 号：TM341[电气工程—电机]