CAJ | 학술논문

转子结构影响电机的气隙磁通密度，从而影响无轴承永磁薄片电机可控性、转矩脉动以及径向悬浮力等性能。本文从无轴承永磁薄片电机不同的永磁转子结构（表贴式、表面嵌入式、Halbach阵列以及平行充磁环形转子）出发，对其机械强度、磁场分布等进行对比分析。基于麦克斯韦张量法提出了无轴承永磁薄片电机在任意极对数下的数学模型，运用Ansoft对其计算精度进行验证分析，并对具有不同永磁转子结构的无轴承永磁薄片电机径向悬浮力与悬浮力绕组电流之间的关系进行对比分析，得到不同永磁转子结构的优缺点。样机试验验证了仿真结果的正确性，研究结果对无轴承永磁薄片电机转子的参数优化设计具有参考价值。
전자결구영향전궤적기극자통밀도，종이영향무축승영자박편전궤가공성、전구맥동이급경향현부력등성능。본문종무축승영자박편전궤불동적영자전자결구（표첩식、표면감입식、Halbach진렬이급평행충자배형전자）출발，대기궤계강도、자장분포등진행대비분석。기우맥극사위장량법제출료무축승영자박편전궤재임의겁대수하적수학모형，운용Ansoft대기계산정도진행험증분석，병대구유불동영자전자결구적무축승영자박편전궤경향현부력여현부력요조전류지간적관계진행대비분석，득도불동영자전자결구적우결점。양궤시험험증료방진결과적정학성，연구결과대무축승영자박편전궤전자적삼수우화설계구유삼고개치。
Aiming at the characteristics of the air?flux density affected by the rotor structures, which leads to the effect on the radial suspension force, the suspension property of bearingless permanent magnet slice motor ( BPSM) , starting from the different rotor structures ( surface?mounted rotor, surface?embedded rotor, Halbach ar?ray rotor and parallel magnetized ring?shaped rotor) , their basic features, such as mechanical strength, magnetic field distribution, and etc. were analyzed. Based on the Maxwell stress tensor method, the mathematic model of the BPSM under any number of pole?pairs was proposed. The finite element analysis ( FEA) by the software of Ansoft has shown that the proposed method has a good enough accuracy. Then the relationship between the suspension force and the current in the suspension windings of the BPSM with different rotor structures is compared and ana?lyzed, and the advantages and disadvantages of the different rotor structures are obtained. Finally the experiments of the model machine verify the simulation results. The research results can provide a good reference to the parame?ter optimization of the BPSM in the paper.