ELECTRIC-MOTOR DRIVE FOR A MOTOR VEHICLE AND RADIATOR FAN

    公开(公告)号:US20230019265A1

    公开(公告)日:2023-01-19

    申请号:US17953537

    申请日:2022-09-27

    发明人: Eugen Hermann

    IPC分类号: H02K11/02 H02K5/20 F01P5/04

    摘要: An electric-motor drive, more particularly a fan drive, is provided for a motor vehicle. The drive contains an electric motor which has a rotatably mounted rotor and a stator having a laminated core. The laminated core forms a stator yoke and stator teeth of the stator, the stator teeth are directed radially from the stator yoke, and a stator winding is supported on the stator teeth. An electrically conductive covering part is provided for influencing and/or screening electromagnetic interference fields produced during the electric-motor operation. The covering part has a sleeve-type lateral wall and a circular-ring-shaped cover surface, which protrudes radially inward from an end of the lateral wall. The lateral wall is placed onto an outer periphery of the stator yoke. The cover surface axially covers the stator winding at least partly, and the lateral wall has a number of venting openings.

    Device for reducing harmful bearing voltages

    公开(公告)号:US11552535B2

    公开(公告)日:2023-01-10

    申请号:US16768534

    申请日:2018-12-19

    IPC分类号: H02K11/00 H02K11/26 H02K11/02

    摘要: The invention relates to a device for reducing harmful bearing voltages in an electrical machine (M) fed by a DC link voltage of a DC link, said electrical machine comprising a stator (3), which has windings (7) and is insulated from ground (GND), and a rotor (2) and a motor shaft, wherein furthermore a rotor-side bearing (LAR) and a stator-side bearing (LAS) are each insulated from the ground (GND) and the rotor (2) and the stator (3) are electrically connected to each other by means of a bypass capacitance (CBypass) having a predefined capacitance.