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2021-09-03
Characteristic Research on Double Rotor Permanent Magnet Motor with Irregular Halbach Array
By
Progress In Electromagnetics Research M, Vol. 104, 133-144, 2021
Abstract
Dual-rotor permanent magnet motor has the characteristics of high torque density and high efficiency and has a wide range of application prospects in many fields. However, the double air-gap structure also makes the internal magnetic field distribution more complicated and torque fluctuation more serious. To improve the double-layer air-gap magnetic field distribution and reduced torque pulsation, based on the Halbach array magnetization, the inner and outer irregular Halbach array dual-rotor permanent magnet motor model was established to obtain the ideal one-sided magnetic field. By comparing the magnetic field distribution of the inner and outer layers, the no-load back-EMF, and the cogging torque, it is proved that the motor with the proposed structure can optimize the air-gap magnetic density and no-load back-EMF and reduce the cogging torque; at the same time, the torque ripple is also significantly reduced to ensure the stability of the motor operation.
Citation
Yonglin Pan Libing Jing , "Characteristic Research on Double Rotor Permanent Magnet Motor with Irregular Halbach Array," Progress In Electromagnetics Research M, Vol. 104, 133-144, 2021.
doi:10.2528/PIERM21071903
http://www.jpier.org/PIERM/pier.php?paper=21071903
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