Wound rotor for an electric motor provided with a cooling circuit

    公开(公告)号:US20240348118A1

    公开(公告)日:2024-10-17

    申请号:US18700072

    申请日:2022-10-13

    申请人: NOVARES FRANCE

    摘要: The invention relates to a wound rotor (10) for an electric motor (1), comprising: —a rotor shaft (12) rotatably mounted about an axis (X); —rotor laminations (14) mounted coaxially on the rotor shaft (12), said rotor laminations (14) having alternating poles and interpolar spaces; —a front winding flange (15) and a rear winding flange (15′) mounted coaxially on the rotor shaft (12) and arranged axially on either side of the rotor laminations (14); —windings (16) partially surrounding the poles (141) of the rotor laminations (14) and the front and rear winding flanges (15, 15′); wherein a plurality of fluid flow channels pass through the front winding flange (15) and/or the rear winding flange (15′), through which flow channels a cooling fluid can flow.

    ELECTRIC POWERHEAD
    8.
    发明公开
    ELECTRIC POWERHEAD 审中-公开

    公开(公告)号:US20240283323A1

    公开(公告)日:2024-08-22

    申请号:US18418569

    申请日:2024-01-22

    发明人: David Schulenberg

    摘要: An electric powerhead includes an electric motor including an output shaft configured to rotate about an axis of rotation, a battery including a plurality of lithium-ion battery cells, the battery coupled to the electric motor, a housing having a cross-sectional footprint substantially the same as 174.5 in2, and a base plate configured to be fastened to a mounting surface, the base plate including a plurality of openings arranged in an engine support pattern.

    Energy-Saving Three-Phase Brushless Direct-Current Machine

    公开(公告)号:US20240283313A1

    公开(公告)日:2024-08-22

    申请号:US18143668

    申请日:2023-05-05

    摘要: A brushless direct-current machine is provided, comprising a casing; a body in the casing; a motor in the body; a stator coil bidirectionally wound through slots but not empty slots; and a set of planetary gears. The duty ratio of pulse-width modulation is adjusted by using the three-phase windings of the stator coil to change a current flowing through. A controller switches the current direction of the windings for producing changes in magnetic field. Between the polarity of the stator and the polarities of magnets of a rotor, power is generated owing to the simultaneous functions of same-pole repulsion and opposite-pole attraction for controlling the rotation of the rotor. The 3 empty slots are used to break the original magnetic field into parts to make the rotation force lighter and driving effect better. Thus, an activating current is lowered, and energy and electricity are saved effectively.