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    VARIBALE FREQUENCY DRIVE SYSTEM WITH MEDIUM VOLTAGE INPUT AND LOW VOLTAGE OUTPUT
    3.
    发明公开
    VARIBALE FREQUENCY DRIVE SYSTEM WITH MEDIUM VOLTAGE INPUT AND LOW VOLTAGE OUTPUT 审中-公开

    公开(公告)号：US20240186930A1

    公开(公告)日：2024-06-06

    申请号：US18062173

    申请日：2022-12-06

    Applicant: Trane International Inc.

    Inventor： Benjamin J. Sykora

    IPC: H02P23/04 ,  H02P25/18 ,  H02P27/06

    CPC classification number: H02P23/04 ,  H02P25/184 ,  H02P27/06 ,  H02P2201/01

    Abstract: According to an embodiment of the present disclosure, an apparatus includes a transformer having a set of input terminals, a first set of output terminals, and a second set of output terminals. First and second rectifiers are coupled to the first and second sets of output terminals, respectively. The transformer is configured to transform three phase alternating current (AC) provided to the set of input terminals into first and second three phase AC outputs at the first and second sets of output terminals, respectively. The first three phase AC output is phase shifted from the second three phase AC output.

    PERMANENT MAGNET MOTOR HARMONIC FILTER
    4.
    发明申请
    PERMANENT MAGNET MOTOR HARMONIC FILTER 有权

    公开(公告)号：US20210328481A1

    公开(公告)日：2021-10-21

    申请号：US16853372

    申请日：2020-04-20

    Applicant: Trane International Inc.

    Inventor： Benjamin J. Sykora ,  Seth M. McGill ,  Petri J. Mäki-Ontto

    IPC: H02K11/02 ,  H02K9/19 ,  H02K21/14 ,  H03H1/00

    Abstract: Architectures or techniques are presented that can improve operation of permanent magnet (PM) motors, which can be part of a compressor or other heating, ventilation, and air conditioning (HVAC) device. Such improvements can be achieved by integration of inductive filtering into the motor assembly. A higher overall inductance can reduce current ripple and can further result in a lower total harmonic distortion, reduced power loss, and reduced heat generated. For example a first architecture can include a ferromagnetic core element in the PM motor that can cause a non-torque-producing reluctance path to the shaft. A second architecture can integrate a signal filter, which is customarily external, into a housing of the PM motor. Such can significant reduce costs and provide other advantages. A third architecture can couple an inductor (e.g., of the signal filter) to the shaft. Rotation of the shaft can thus serve to provide additional cooling for the inductor.

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