MEDIUM-FREQUENCY TRANSFORMER-BASED DOUBLE-ISOLATED AUXILIARY SUPPLY FOR MEDIUM-VOLTAGE DC/DC CONVERTERS

    公开(公告)号:US20250096691A1

    公开(公告)日:2025-03-20

    申请号:US18888641

    申请日:2024-09-18

    Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.

    Charging station with high frequency distribution network

    公开(公告)号:US12255461B2

    公开(公告)日:2025-03-18

    申请号:US17366488

    申请日:2021-07-02

    Abstract: A charging station for electric vehicles includes a central part for converting a grid AC voltage from an electrical grid into a high frequency AC voltage; a distribution network for distributing the high frequency AC voltage; and a plurality of coils directly connected to the distribution network, wherein each coil is adapted for transferring energy to an electrical vehicle.

    Bi-directional line-interphase transformer-based converter

    公开(公告)号:US11949348B2

    公开(公告)日:2024-04-02

    申请号:US17884008

    申请日:2022-08-09

    CPC classification number: H02M7/797 H02M7/493 H02M7/757 H01F30/12 H02J3/381

    Abstract: A multi-pulse line-interphase transformer converter includes an electric part that includes magnetic components configured to be connected to a three-phase AC grid, and an electric part that includes a multi-phase voltage system configured to be connected to a common DC capacitor. The electric part splits each AC grid phase n times into two phases, resulting in a plurality of intermediate phases at an internal interface, each intermediate phase corresponding to a pulse of the multi-pulse line-interphase transformer converter. The intermediate phases are connected to the multi-phase voltage system. The multi-phase voltage system comprises bridges with actively controlled switches. The bridges are connected in parallel to the common DC capacitor.

    Bi-Directional Line-Interphase Transformer-Based Converter

    公开(公告)号:US20230049615A1

    公开(公告)日:2023-02-16

    申请号:US17884008

    申请日:2022-08-09

    Abstract: A multi-pulse line-interphase transformer converter includes an electric part that includes magnetic components configured to be connected to a three-phase AC grid, and an electric part that includes a multi-phase voltage system configured to be connected to a common DC capacitor. The electric part splits each AC grid phase n times into two phases, resulting in a plurality of intermediate phases at an internal interface, each intermediate phase corresponding to a pulse of the multi-pulse line-interphase transformer converter. The intermediate phases are connected to the multi-phase voltage system. The multi-phase voltage system comprises bridges with actively controlled switches. The bridges are connected in parallel to the common DC capacitor.

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