Resonant power converter for wide voltage switching

    公开(公告)号:US11777411B2

    公开(公告)日:2023-10-03

    申请号:US17632020

    申请日:2020-08-03

    CPC classification number: H02M3/33569 H02J7/06 H02M1/4241

    Abstract: A resonant converter device comprising a selectable primary winding comprising a plurality of circuit legs, the selectable primary winding comprising one or more of a tapped primary winding or a plurality of switchable primary windings. At least one secondary winding coupled to the selectable primary winding to form a resonant transformer. At least one resonant inductor coupled to at least one of the plurality of circuit legs. A plurality of resonant capacitors, each circuit leg comprising at least a respective one of the plurality of resonant capacitors, and at least a second resonant capacitor of the plurality of resonant capacitors coupled within the second circuit leg. And, one or more switching devices connected to the resonant transformer and configured to selectively vary a resonant impedance of the resonant converter device when a voltage inputted to the resonant converter device varies.

    POSITION HOLD CONTROL FOR A CONVEYING PROCESS

    公开(公告)号:US20240186931A1

    公开(公告)日:2024-06-06

    申请号:US18075002

    申请日:2022-12-05

    CPC classification number: H02P23/14 B65G23/00

    Abstract: A control apparatus for a conveying system includes: a control module configured to control a power converter coupled to a motor, and a modification module. The modification module is configured to: estimate a size parameter of an item conveyed by the motor, determine if a hold command is received; and if a hold command is received, modify one or more parameters of the control module based on the estimated size parameter of the item to thereby hold a rotor of the motor at a rotor hold position.

    PULSE WIDTH MODULATION CONTROL MODULE FOR AN INVERTER

    公开(公告)号:US20250088122A1

    公开(公告)日:2025-03-13

    申请号:US18243189

    申请日:2023-09-07

    Abstract: A system includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a pulse width modulation module. The pulse width modulation module is configured to: determine a modulation index based on a voltage of the energy storage apparatus and a target output voltage of the inverter; select one of a plurality of pulse width modulation (PWM) approaches based on the modulation index; and determine a switching command for the inverter based on the target output voltage and the selected one of the plurality of PWM modulation approaches.

    VOLTAGE BOOST MODULE FOR A POWER CONVERTER

    公开(公告)号:US20250030352A1

    公开(公告)日:2025-01-23

    申请号:US18224829

    申请日:2023-07-21

    Abstract: In one aspect, a power converter includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a voltage boost system configured to: determine a modulation index based on a DC voltage of the energy storage apparatus and a target output voltage of the inverter; and determine whether the target output voltage is in a voltage boost region based on the modulation index; if the target output voltage is in the voltage boost region: determine an adjustment value based on the modulation index; and adjust one or more of the target output voltage and an associated output voltage phase angle based on the adjustment value.

    RESONANT POWER CONVERTER FOR WIDE VOLTAGE SWITCHING

    公开(公告)号:US20220286055A1

    公开(公告)日:2022-09-08

    申请号:US17632020

    申请日:2020-08-03

    Abstract: A resonant converter device comprising a selectable primary winding comprising a plurality of circuit legs, the selectable primary winding comprising one or more of a tapped primary winding or a plurality of switchable primary windings. At least one secondary winding coupled to the selectable primary winding to form a resonant transformer. At least one resonant inductor coupled to at least one of the plurality of circuit legs. A plurality of resonant capacitors, each circuit leg comprising at least a respective one of the plurality of resonant capacitors, and at least a second resonant capacitor of the plurality of resonant capacitors coupled within the second circuit leg. And, one or more switching devices connected to the resonant transformer and configured to selectively vary a resonant impedance of the resonant converter device when a voltage inputted to the resonant converter device varies.

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