Cooling a high-power electric machine

    公开(公告)号:US12273008B2

    公开(公告)日:2025-04-08

    申请号:US17860675

    申请日:2022-07-08

    Abstract: A cooling sleeve for an electric machine is provided. The cooling sleeve includes: a cylindrical body having an exterior surface, a first channel formed in the cylindrical body and having a first inlet for receiving a cooling fluid, and a second channel formed in the cylindrical body and having a second inlet for receiving the cooling fluid. The first inlet and the second inlet are formed on the exterior surface at a center along a length of the cylindrical body. A plurality of turbulators are formed in the first channel and the second channel and a cylindrical cover is configured to be disposed over the cylindrical body.

    Compact high speed generator having respective oil and air cooling passages

    公开(公告)号:US10715013B2

    公开(公告)日:2020-07-14

    申请号:US16515306

    申请日:2019-07-18

    Abstract: A method for generating electrical power may include the steps of rotating a rotor of a generator at a speed in excess of about 12,000 revolutions per minute (rpm) to about 25,000 rpm and producing power with the generator at a rate in excess of about 800 kilowatts (kW). The generator has a power/weight ratio no smaller than about 3 kW/lbs. A rotor is cooled with cooling oil internally circulated through the rotor of the generator so that contact of cooling oil with external surfaces of the rotor may be precluded. The stator is also cooled with oil that is prevented from contacting the external surfaces of the rotor. Pressurized airflow may be produced in a gap between the rotor and a stator of the generator to preclude entry of cooling oil into the gap.

Patent Agency Ranking