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    • 4. 发明授权
    • Permanent magnet electric motor inducing short circuit current in short circuit coil
    • 永磁电动机在短路线圈中引发短路电流
    • US08674575B2
    • 2014-03-18
    • US13000227
    • 2009-06-19
    • Kazuto SakaiYutaka HashibaYosuke OtsuboYusuke MatsuokaNorio TakahashiTadashi Tokumasu
    • Kazuto SakaiYutaka HashibaYosuke OtsuboYusuke MatsuokaNorio TakahashiTadashi Tokumasu
    • H02K21/46H02K1/26H02K1/27
    • H02K1/2766H02K21/028H02K21/04
    • An increase of the magnetization current can be restrained during demagnetization and magnetization, and a variable speed operation can be achieved at a high power output over a wide range of from a low speed to a high speed. A rotor 1 is configured by a rotor core 2, permanent magnets 3 having a small value as the product of the coercivity and the thickness in the magnetization direction thereof, and permanent magnets 4 having a large value as the product. When reducing a flux linkage of the permanent magnets 3, a magnetic field directed to the reverse direction of the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. When increasing a flux linkage of the permanent magnets 3, a magnetic field directed to the same direction as the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. A short circuit coil 8 is located in a magnetic path part of each permanent magnet 4 other than the permanent magnets 3. A magnetic field due to a magnetization current induces an induced current to generate a magnetic field on the periphery of the short circuit coil 8. The generated magnetic field and the magnetization current generate a magnetic field to magnetize the permanent magnets 3.
    • 在退磁和磁化期间可以抑制磁化电流的增加,并且可以在从低速到高速的宽范围内的高功率输出下实现可变速度操作。 转子1由转子铁心2构成,永久磁铁3的矫顽力与其磁化方向的厚度的乘积小,永久磁铁4的值大的值为乘积。 当减少永久磁铁3的磁链时,导致由于电枢线圈的电流而导致永久磁铁3的磁化方向的相反方向的磁场作用于它们。 当增加永磁体3的磁通量时,引起由于电枢线圈的电流而导致与永磁体3的磁化方向相同方向的磁场的作用。 短路线圈8位于永磁体3以外的永久磁铁4的磁路部分。由于磁化电流而产生的磁场引起感应电流,从而在短路线圈8的周围产生磁场 所产生的磁场和磁化电流产生磁场以磁化永磁体3。
    • 6. 发明申请
    • PERMANENT MAGNET ELECTRIC MOTOR
    • 永磁电机
    • US20110175478A1
    • 2011-07-21
    • US13000227
    • 2009-06-19
    • Kazuto SakaiYutaka HashibaYosuke OtsuboYusuke MatsuokaNorio TakahashiTadashi Tokumasu
    • Kazuto SakaiYutaka HashibaYosuke OtsuboYusuke MatsuokaNorio TakahashiTadashi Tokumasu
    • H02K21/12
    • H02K1/2766H02K21/028H02K21/04
    • An increase of the magnetization current can be restrained during demagnetization and magnetization, and a variable speed operation can be achieved at a high power output over a wide range of from a low speed to a high speed. A rotor 1 is configured by a rotor core 2, permanent magnets 3 having a small value as the product of the coercivity and the thickness in the magnetization direction thereof, and permanent magnets 4 having a large value as the product. When reducing a flux linkage of the permanent magnets 3, a magnetic field directed to the reverse direction of the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. When increasing a flux linkage of the permanent magnets 3, a magnetic field directed to the same direction as the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. A short circuit coil 8 is located in a magnetic path part of each permanent magnet 4 other than the permanent magnets 3. A magnetic field due to a magnetization current induces an induced current to generate a magnetic field on the periphery of the short circuit coil 8. The generated magnetic field and the magnetization current generate a magnetic field to magnetize the permanent magnets 3.
    • 在退磁和磁化期间可以抑制磁化电流的增加,并且可以在从低速到高速的宽范围内的高功率输出下实现可变速度操作。 转子1由转子铁心2构成,永久磁铁3的矫顽力与其磁化方向的厚度的乘积小,永久磁铁4的值大的值为乘积。 当减少永久磁铁3的磁链时,导致由于电枢线圈的电流而导致永久磁铁3的磁化方向的相反方向的磁场作用于它们。 当增加永磁体3的磁通量时,引起由于电枢线圈的电流而导致与永磁体3的磁化方向相同方向的磁场的作用。 短路线圈8位于永磁体3以外的永久磁铁4的磁路部分。由于磁化电流而产生的磁场引起感应电流,从而在短路线圈8的周围产生磁场 所产生的磁场和磁化电流产生磁场以磁化永磁体3。