著者
貝森 弘行 岡本 吉史 若尾 真治
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌D(産業応用部門誌) (ISSN:09136339)
巻号頁・発行日
vol.139, no.4, pp.380-387, 2019-04-01 (Released:2019-04-01)
参考文献数
15
被引用文献数
1

Recently, from the viewpoint of vibration and noise reductions, torque ripple reduction of motor-equipped electrical machines is the need of the hour. The authors have already proposed to improve torque characteristics of a synchronous reluctance motor using the topology optimization method. The evaluated rotor structure succeeded in substantial torque ripple reduction, but the cause for this reduction was unknown. In this paper, we investigate the reason for torque ripple reduction using the improved rotor structure of the motor by a topology optimization method known as R-SLP, by comparing it to the reference model using finite element analysis. A calculation method is proposed to analyze the circumferential magnetic force density of spatial and time harmonic orders using the magnetic density in the air gap. By focusing on the time order at which the torque waveform was evaluated, we estimate which circumferential magnetic force density orders affect torque ripple reduction. Then, we clarify the reason for torque ripple reduction to examine the influence of local shape of rotor structure using 12th time-harmonic magnetic fields. As a result, the modified flux barrier rotor structure is obtained, which further reduces the torque ripple in comparison to the previous structure.

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SynRMのトルクリプルを低減するフラックスバリア形状をトポロジー最適化で求めた論文.バリア外側がd軸方向に広がる形状がリプル低減に有効.時間12次成分の磁束がバリア外側のくぼみに吸収され,ロータ内部まで入らなかったためである. https://t.co/xbHdtQyLvt
トルクリプル低減を目的としたトポロジー最適化によるSynRMの最適化構造から、帰納的にSynRMのトルクリプル発生要因に関して検討する論文。時間12次の磁束密度がリプルへの影響が大きいことを突き止め、フラックスバリア先端のつば形状がリプル低減に寄与すると解明。 #論文 https://t.co/pUodnxAX04

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