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公开(公告)号：US20210391782A1
公开(公告)日：2021-12-16
申请号：US16899217
申请日：2020-06-11
Applicant: ABB Schweiz AG
Inventor： Yuxiang Shi , Yu Du , Eddy Aeloiza
Abstract: A soft switching resonant converter is disclosed. The converter includes a power switch operable to connect and disconnect a DC link rail node and an output node. A resonant capacitor is coupled with the power switch. An auxiliary leg is coupled with a DC link midpoint node and the output node. An active damper is coupled in series with the resonant capacitor and the output node and is controllable to provide a first resistance of the active damper in a first state and a second resistance of the active damper in a second state, the first resistance having a lower magnitude than the second resistance. A driver controls the damper switch to provide a first resistance during the soft switching operation of the power switch and a second resistance after the soft switching operation of the power switch.
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Patent Agency Ranking
2.发明公开公开(公告)号：US20240146212A1
公开(公告)日：2024-05-02
申请号：US17975527
申请日：2022-10-27
Applicant: ABB Schweiz AG
Inventor： Eddy C. Aeloiza , Yuxiang Shi , Goran Mandic , Weiqiang Chen
CPC classification number: H02M7/539 , H02M1/0012 , H02M7/4815
Abstract: A method for an auxiliary device of an auxiliary resonant commutated pole inverter (ARCPI) to determine a boosting time of the ARCPI is provided. The auxiliary device includes an auxiliary switch path that uses a resonant inductor with at least one saturable inductor. The method includes: calculating, by a processor of the auxiliary device, a first boosting time in the auxiliary switch path based on a theoretical resonance inductance and a voltage that are applied to the resonant inductor; determining, by the processor, a second boosting time in the auxiliary switch path based on a look-up table; and determining, by the processor, the boosting time in the auxiliary switch path based on the first boosting time and the second boosting time. The method further includes controlling, by the processor, boosting current of the ARCPI based on the boosting time in the auxiliary switch path.
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公开(公告)号：US11469684B2
公开(公告)日：2022-10-11
申请号：US16899217
申请日：2020-06-11
Applicant: ABB Schweiz AG
Inventor： Yuxiang Shi , Yu Du , Eddy Aeloiza
Abstract: A soft switching resonant converter is disclosed. The converter includes a power switch operable to connect and disconnect a DC link rail node and an output node. A resonant capacitor is coupled with the power switch. An auxiliary leg is coupled with a DC link midpoint node and the output node. An active damper is coupled in series with the resonant capacitor and the output node and is controllable to provide a first resistance of the active damper in a first state and a second resistance of the active damper in a second state, the first resistance having a lower magnitude than the second resistance. A driver controls the damper switch to provide a first resistance during the soft switching operation of the power switch and a second resistance after the soft switching operation of the power switch.
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公开(公告)号：US12255552B2
公开(公告)日：2025-03-18
申请号：US17975527
申请日：2022-10-27
Applicant: ABB Schweiz AG
Inventor： Eddy C. Aeloiza , Yuxiang Shi , Goran Mandic , Weiqiang Chen
Abstract: A method for an auxiliary device of an auxiliary resonant commutated pole inverter (ARCPI) to determine a boosting time of the ARCPI is provided. The auxiliary device includes an auxiliary switch path that uses a resonant inductor with at least one saturable inductor. The method includes: calculating, by a processor of the auxiliary device, a first boosting time in the auxiliary switch path based on a theoretical resonance inductance and a voltage that are applied to the resonant inductor; determining, by the processor, a second boosting time in the auxiliary switch path based on a look-up table; and determining, by the processor, the boosting time in the auxiliary switch path based on the first boosting time and the second boosting time. The method further includes controlling, by the processor, boosting current of the ARCPI based on the boosting time in the auxiliary switch path.
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公开(公告)号：US20230163691A1
公开(公告)日：2023-05-25
申请号：US17535341
申请日：2021-11-24
Applicant: ABB Schweiz AG
Inventor： Yuxiang Shi , Jing Xu , Utkarsh Raheja
CPC classification number: H02M3/335 , H02M1/0003
Abstract: A device for load line regulation of a sigma convert is provided. The device comprises a sigma converter comprising an inductor inductor capacitor (LLC) circuit and a buck converter. The device also comprises control circuitry for the sigma converter. The control circuitry is configured to receive a plurality of electrical measurements associated with the sigma converter; determine, based on the plurality of electrical measurements, an adjusted electrical characteristic for load line regulation of the sigma converter; and provide, based on the adjusted electrical characteristic, gating signals to the buck converter to perform the load line regulation of the sigma converter.
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公开(公告)号：US11258264B2
公开(公告)日：2022-02-22
申请号：US15989667
申请日：2018-05-25
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Sandeep Bala , Liming Liu , Yuxiang Shi
Abstract: Unique systems, methods, techniques and apparatuses of photovoltaic (PV) string power systems are disclosed. One exemplary embodiment is a PV power system comprising a plurality of PV strings and a floating DC-DC optimizer. The floating DC-DC optimizer comprises a first DC bus rail, a second DC bus rail, a plurality of input legs, each leg being coupled across the first DC bus rail and second DC bus rail, including two input leg semiconductor switches coupled at an input terminal, each input terminal being structured to receive an input current from an end of one PV string of the plurality of PV strings, and an output leg including two output leg semiconductor devices coupled at an output terminal.
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