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    • 5. 发明授权
    • Rotary electric machine system
    • 旋转电机系统
    • US08742710B2
    • 2014-06-03
    • US13422184
    • 2012-03-16
    • Eiji YamadaKenji HiramotoHideo NakaiNorimoto Minoshima
    • Eiji YamadaKenji HiramotoHideo NakaiNorimoto Minoshima
    • H02P7/00
    • H02P27/08H02K19/10H02K19/26H02P2205/05H02P2209/13
    • A rotary electric machine system includes: a stator that has multi-phase stator coils and that generates stator magnetomotive forces based on respective stator currents having different phases supplied to the multi-phase stator coils; a rotor on which rotor coils are wound such that magnetic poles are formed by rotor currents generated in response to the stator magnetomotive forces generated by the stator; a regulating unit that regulates a flow direction of each of the rotor currents to one direction to thereby regulate a polarity of each of the magnetic poles; and a control unit that controls currents supplied to the stator coils on the basis of a target torque. The control unit superimposes a pulse on the stator currents to adjust the ratio of each of the stator currents and each of the rotor currents so as to minimize a copper loss in the stator and the rotor.
    • 一种旋转电机系统,包括:定子,具有多相定子线圈,并且基于各自提供给所述多相定子线圈的相位的相位不同的定子电流产生定子磁动势; 转子,其上缠绕有转子线圈,使得磁极由响应于由定子产生的定子磁通势产生的转子电流形成; 调节单元,其将每个转子电流的流动方向调节到一个方向,从而调节每个磁极的极性; 以及控制单元,其基于目标转矩来控制提供给定子线圈的电流。 控制单元在定子电流上叠加脉冲以调节每个定子电流和每个转子电流的比率,以便最小化定子和转子中的铜损耗。
    • 8. 发明申请
    • NITRIDE SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND METHOD FOR PRODUCING SAME
    • 氮化物半导体发光元件及其制造方法
    • US20120319080A1
    • 2012-12-20
    • US13579174
    • 2011-02-17
    • Mayuko FudetaEiji Yamada
    • Mayuko FudetaEiji Yamada
    • H01L33/04
    • H01L33/32H01L33/007H01L33/0075H01L33/025H01L33/04H01L33/12H01L33/20
    • Disclosed is a nitride semiconductor light-emitting element comprising a p-type nitride semiconductor layer 1, a p-type nitride semiconductor layer 2, and a p-type nitride semiconductor layer 3 placed in order above a nitride semiconductor active layer, wherein the p-type nitride semiconductor layer 1 and p-type nitride semiconductor layer 2 each contain A1, the average A1 composition of the p-type nitride semiconductor layer 1 is equivalent to the average A1 composition of the p-type nitride semiconductor layer 2, the p-type nitride semiconductor layer 3 has a smaller band gap than the p-type nitride semiconductor layer 2, the p-type impurity concentration of the p-type nitride semiconductor layer 2 and the p-type impurity concentration of the p-type nitride semiconductor layer 3 are both lower than the p-type impurity concentration of the p-type nitride semiconductor layer 1, and a method for producing same.
    • 公开了一种氮化物半导体发光元件,其包括在氮化物半导体有源层上顺序放置的p型氮化物半导体层1,p型氮化物半导体层2和p型氮化物半导体层3,其中p p型氮化物半导体层1和p型氮化物半导体层2各自含有Al,p型氮化物半导体层1的平均Al组成等价于p型氮化物半导体层2的平均Al组成,p 型氮化物半导体层3具有比p型氮化物半导体层2更小的带隙,p型氮化物半导体层2的p型杂质浓度和p型氮化物半导体的p型杂质浓度 层3都低于p型氮化物半导体层1的p型杂质浓度,及其制造方法。
    • 9. 发明申请
    • ROTARY ELECTRIC MACHINE SYSTEM
    • 旋转电机系统
    • US20120235621A1
    • 2012-09-20
    • US13422184
    • 2012-03-16
    • Eiji YamadaKenji HiramotoHideo NakaiNorimoto Minoshima
    • Eiji YamadaKenji HiramotoHideo NakaiNorimoto Minoshima
    • H02P23/14H02K19/28
    • H02P27/08H02K19/10H02K19/26H02P2205/05H02P2209/13
    • A rotary electric machine system includes: a stator that has multi-phase stator coils and that generates stator magnetomotive forces based on respective stator currents having different phases supplied to the multi-phase stator coils; a rotor on which rotor coils are wound such that magnetic poles are formed by rotor currents generated in response to the stator magnetomotive forces generated by the stator; a regulating unit that regulates a flow direction of each of the rotor currents to one direction to thereby regulate a polarity of each of the magnetic poles; and a control unit that controls currents supplied to the stator coils on the basis of a target torque. The control unit superimposes a pulse on the stator currents to adjust the ratio of each of the stator currents and each of the rotor currents so as to minimize a copper loss in the stator and the rotor.
    • 一种旋转电机系统,包括:定子,具有多相定子线圈,并且基于各自提供给所述多相定子线圈的相位的相位不同的定子电流产生定子磁动势; 转子,其上缠绕有转子线圈,使得磁极由响应于由定子产生的定子磁通势产生的转子电流形成; 调节单元,其将每个转子电流的流动方向调节到一个方向,从而调节每个磁极的极性; 以及控制单元,其基于目标转矩来控制提供给定子线圈的电流。 控制单元在定子电流上叠加脉冲以调节每个定子电流和每个转子电流的比率,以便最小化定子和转子中的铜损耗。