Conventional integer slot design in permanent magnet (PM) motor tends to have a high cogging torque and large end turns, which contribute to copper losses. The fractional slot is effective compared to integer slot in the cogging torque and electromotive force (EMF) waveform. The effectiveness of fractional slot can be maximized by selecting optimal pole to slot ratio. This paper presents the effect of pole to slot ratio on the cogging torque and EMF waveform in the PM motor with fractional slot. The effectiveness of the proposed designs has been confirmed by comparing waveform of EMF, cogging torque and torque ripple between conventional and new models.


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    Title :

    Effect of pole to slot ratio on cogging torque and EMF waveform in fractional slotted BLDC motor


    Contributors:
    Lee, Kab-Jae (author) / Kim, Tae Heoung (author) / Baek, Soo-Hyun (author) / Lee, Ju (author)


    Publication date :

    2004


    Size :

    4 Seiten, 7 Bilder, 1 Tabelle, 6 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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