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1.发明申请公开(公告)号：US20200083800A1
公开(公告)日：2020-03-12
申请号：US16543764
申请日：2019-08-19
Applicant: ABB Schweiz AG
Inventor： Juergen Steinke , Philippe Maibach
Abstract: The application discloses an arrangement of switches for a voltage source converter cell, the voltage source converter cell having two AC terminals, wherein the arrangement of switches forms a number of parallel series circuits (branches, current paths), wherein the switches in each of the series circuits paths are being controlled by external signals to alter a conductivity status of the switches between an “ON”-state and an “OFF”-state. The external signals are generated by one or more control units, and the two AC terminals are each connected to subsets of the series circuits of the switches. The control units comprises failure detection means, the failure detection means being adapted to determine a defective switch in the series circuits by predetermined conditions. The control units are further configured to output a control signal to alter a conductivity condition of each of the switches in the series circuits in such a manner, that a short circuit between the two AC terminals is created, if one of the switches is determined as being defective according to the predetermined conditions.
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公开(公告)号：US10348093B2
公开(公告)日：2019-07-09
申请号：US15378679
申请日：2016-12-14
Applicant: ABB Schweiz AG
Inventor： Harish Suryanarayana , Hongrae Kim , Sara Ahmed , Peter Steimer , Philippe Maibach , Hans Krattiger , Silverio Alvarez , Paolo Casini , Jiuping Pan
Abstract: Unique systems, methods, techniques and apparatuses of a power collection system are disclosed herein. One exemplary embodiment is an MVDC collection system coupled to a utility grid including a collection bus, a plurality of branches coupled to the collection bus, and a branch controller. Each of the plurality of branches include a semiconductor switch coupled to the collection bus, and a DC/DC converter coupled to the semiconductor switch and an LVDC power source. The branch controller configured to determine a fault condition is occurring within the MVDC collection system, determine the location of the fault condition, and isolate the fault condition using at least one of the semiconductor switches and the DC/DC converters.
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公开(公告)号：US20180166881A1
公开(公告)日：2018-06-14
申请号：US15378679
申请日：2016-12-14
Applicant: ABB Schweiz AG
Inventor： Harish Suryanarayana , Hongrae Kim , Sara Ahmed , Peter Steimer , Philippe Maibach , Hans Krattiger , Silverio Alvarez , Paolo Casini , Jiuping Pan
CPC classification number: H02J3/383 , H02H7/268 , Y02E10/563
Abstract: Unique systems, methods, techniques and apparatuses of a power collection system are disclosed herein. One exemplary embodiment is an MVDC collection system coupled to a utility grid including a collection bus, a plurality of branches coupled to the collection bus, and a branch controller. Each of the plurality of branches include a semiconductor switch coupled to the collection bus, and a DC/DC converter coupled to the semiconductor switch and an LVDC power source. The branch controller configured to determine a fault condition is occurring within the MVDC collection system, determine the location of the fault condition, and isolate the fault condition using at least one of the semiconductor switches and the DC/DC converters.
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公开(公告)号：US10971994B2
公开(公告)日：2021-04-06
申请号：US16543764
申请日：2019-08-19
Applicant: ABB Schweiz AG
Inventor： Juergen Steinke , Philippe Maibach
Abstract: The application discloses an arrangement of switches for a voltage source converter cell, the voltage source converter cell having two AC terminals, wherein the arrangement of switches forms a number of parallel series circuits (branches, current paths), wherein the switches in each of the series circuits paths are being controlled by external signals to alter a conductivity status of the switches between an “ON”-state and an “OFF”-state. The external signals are generated by one or more control units, and the two AC terminals are each connected to subsets of the series circuits of the switches. The control units comprises failure detection means, the failure detection means being adapted to determine a defective switch in the series circuits by predetermined conditions. The control units are further configured to output a control signal to alter a conductivity condition of each of the switches in the series circuits in such a manner, that a short circuit between the two AC terminals is created, if one of the switches is determined as being defective according to the predetermined conditions.
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