电机与控制应用2026，Vol.53Issue(6)：632-643,12.DOI:10.12177/emca.2026.179
定子径向变齿槽宽比削弱对转双转子同步发电机感应电压谐波研究
Research on Harmonic Suppression of Induced Voltage in Counter-Rotating Dual-Rotor Synchronous Generators Using Stator-Radially Variable Slot-Tooth Width Ratio
摘要
Abstract
[Objective]To address the issue of high harmonic content in the air-gap magnetic field and deteriorated induced voltage waveform caused by the traditional constant slot-tooth width ratio structure,this study designs an axial-flux counter-rotating dual-rotor synchronous generator(CR-DRSG)with a stator-radially variable slot-tooth width ratio(S-RVSWR).[Methods]A three-phase 6-slot fractional-slot concentrated winding modular stator was proposed,featuring a variable slot-tooth width ratio structure where the tooth width remained constant and the slot width increased linearly with the stator's circumferential radius.Distributed-winding rotors with 24 slots were placed on both sides of the stator,with dominant pole pairs of 2 and 4,respectively.The magnetic fields generated by DC excitation of the dual rotors were coupled with the stator's dominant pole pair fields.The integral cancellation mechanism of non-working harmonic fluxes was derived using the magnetomotive force-permeance model and radial integration theory.The electromagnetic performance of the traditional and new structures was compared and analyzed through three-dimensional finite element simulations and a prototype experiment platform.[Results]The simulation and experimental results demonstrated that the S-RVSWR structure significantly improved the induced voltage waveform,making it closer to a sine wave.Compared to the traditional constant slot-tooth width ratio structure,the total harmonic distortion of the no-load phase voltage(5 Hz)was reduced from 24.31%to 5.20%,with the amplitudes of the 5th,7th,and 11th harmonics notably decreased.[Conclusion]The structure effectively suppresses low-frequency harmonics in the induced voltage by leveraging the integral cancellation effect generated by the stator's radial geometric non-uniformity.And the effetiveness of the S-RVSWR design has been verified.关键词
轴向磁通/定子径向变齿槽宽比/对转双转子同步发电机/磁动势-磁导Key words
axial-flux/stator-radially variable slot-tooth width ratio/counter-rotating dual-rotor synchronous generator/magnetomotive force-permeance分类
信息技术与安全科学引用本文复制引用
骆皓,丁嘉睿,胡皓宇,杨雨波,倪喜军,秦臻..定子径向变齿槽宽比削弱对转双转子同步发电机感应电压谐波研究[J].电机与控制应用,2026,53(6):632-643,12.基金项目
中国博士后科学基金面上项目(2017M621086) （2017M621086）
江苏省配电网智能技术与装备协同创新中心开放基金项目资助(XTCX202405)General Program of China Postdoctoral Science Foundation(2017M621086) （XTCX202405）
Jiangsu Collaborative Innovation Center for Smart Distribution Network(XTCX202405) （XTCX202405）
