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公开(公告)号：US11433770B2
公开(公告)日：2022-09-06
申请号：US16424199
申请日：2019-05-28
发明人： Zakaria El Khawly , Igor Gusyev , Joerg Merwerth , Nuno Miguel Silva Cerqueira , Christian Steinbauer
IPC分类号： B60L3/04 , B60L3/00 , H02P3/18 , H02P25/022 , H02P27/06 , H02P25/024 , H02P101/45
摘要： A method for switching off a current-excited synchronous machine of a motor vehicle, the current-excited synchronous machine having a rotor supplied by an excitation circuit of power electronics and a stator supplied via a bridge circuit of the power electronics, the method including interrupting a current supply to the rotor and the stator. The method further includes switching over the excitation circuit of the power electronics to a first freewheeling position, whereby energy contained in the excitation circuit and in the rotor is fed into a first energy store via a first feedback arrangement, and switching over the bridge circuit of the power electronics to a second freewheeling position, whereby energy contained in the bridge circuit and in the stator is fed into a second energy store via a second feedback arrangement.
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公开(公告)号：US11374446B2
公开(公告)日：2022-06-28
申请号：US16514362
申请日：2019-07-17
摘要： A pole shoe of an electric machine limits a winding surface of a rotor that can rotate about an axis of rotation. The pole shoe is connected to a pole web of the rotor. An outer side of the pole shoe, which faces away from the pole web in the connected state, has a first region having a substantially sinusoidal contour profile and a second region having a second contour profile. The second contour profile is different from the first contour profile and is formed in such a way that the winding surface in a circumferential direction of the rotor is lengthened with respect to a winding surface of a pole shoe having an outer side extending exclusively substantially sinusoidally.
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公开(公告)号：US09876403B2
公开(公告)日：2018-01-23
申请号：US14500583
申请日：2014-09-29
CPC分类号： H02K1/276
摘要： Spatially mutually close pole components are offset with respect to one another such that their influences on a given harmonic of the vibrations occurring during operation cancel one another as much as possible. The present invention therefore suggests concepts and makes dimensioning proposals by means of which certain harmonic orders of the operating noise can be reduced.
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公开(公告)号：US11025138B2
公开(公告)日：2021-06-01
申请号：US16031649
申请日：2018-07-10
发明人： Julian Blum , Andreas Huber , Markus Lang , Joerg Merwerth , Angusto Guccione
摘要： An electric machine has a housing and has a stator inside the housing, surrounding a rotor arranged on a motor shaft so as to be fixed to the shaft. A rotary field winding, at the ends of the stator, forms a winding head. The winding heads are embedded in a thermally conductive encapsulation material, wherein the encapsulation material is in thermal contact with the housing along the outer circumference of the winding head. A segmented cooling plate is arranged on the inner circumference of the encapsulation winding head.
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