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公开(公告)号：US10941750B2
公开(公告)日：2021-03-09
申请号：US15999607
申请日：2018-08-20
Applicant: ABB Schweiz AG
Inventor： Xiaobo Yang , Chunming Yuan , Chao Yang
Abstract: A method, system and apparatus for operating a hydraulic turbine. A speed adjustment quantity for the hydraulic turbine and a corresponding change in flow quantity are obtained. A rotation speed of the hydraulic turbine is adjusted based on the speed adjustment quantity. A change ratio of the flow quantity with regard to the speed adjustment quantity is determined based on the speed adjustment quantity and the corresponding change in flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined based on the determined change ratio of flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined change ratio of flow quantity. It enables the hydraulic turbine to track a maximum efficiency operation point under a given power order and water head in real time at a low cost.
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公开(公告)号：US10819112B1
公开(公告)日：2020-10-27
申请号：US16366118
申请日：2019-03-27
Applicant: ABB Schweiz AG
Inventor： Jiuping Pan , Chunming Yuan , Xiaobo Yang , Ritwik Majumder , Bertil Berggren , Frans Dijkhuizen , David Schaeffer
Abstract: Systems, methods, techniques and apparatuses of feeder line fault response are disclosed. One exemplary embodiment is a method for operating an alternating current (AC) distribution network including a first feeder line, a second feeder line, and a third feeder line. The method includes isolating a faulted portion of the first feeder line from a healthy portion of the first feeder line; closing a tie switch coupled between the healthy portion and the second feeder line in response to isolating the faulted portion from the healthy portion; determining the second feeder line is experiencing an overload condition after closing the tie switch; and transferring AC power including transferring AC power using a direct current (DC) interconnection system coupled to the third feeder line effective to remove the overload condition from the second feeder line.
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公开(公告)号：US20220149617A1
公开(公告)日：2022-05-12
申请号：US17433954
申请日：2019-03-27
Applicant: ABB Schweiz AG
Inventor： Chunming Yuan , Xiaobo Yang , Xing Huang
IPC: H02J1/00
Abstract: Embodiments of a modular direct current interconnection device (MDCID) include at least three operation branches, at least one transient branch, and a local controller. Each of the operation branches includes a first terminal coupled to a common node and configured to transmit DC current in a normal mode. The transient branch is coupled between second terminals of different ones of the at least three operation branches and configured to provide a transient DC current path in a fault clearance mode. The local controller is coupled to the operation branches and the transient branch and the local controller is configured to control operation of the operation branches and the transient branch.
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公开(公告)号：US20200313423A1
公开(公告)日：2020-10-01
申请号：US16366280
申请日：2019-03-27
Applicant: ABB Schweiz AG
Inventor： Jiuping Pan , Chunming Yuan , Xiaobo Yang , Ritwik Majumder , Bertil Berggren , Frans Dijkhuizen
IPC: H02H7/26
Abstract: Unique systems, methods, techniques and apparatuses of a distribution system are disclosed. One exemplary embodiment is an alternating current (AC) distribution system including a first substation including a first transformer and a protective device; a first distribution network portion coupled to the first transformer; a second substation; a second distribution network portion; a DC interconnection system coupled between the first distribution network portion and the second distribution network portion; and a control system. The control system is structured to detect a fault in the first transformer or the transmission network, isolate the first distribution network from the fault, determine a set point of the DC interconnection system, and operate the DC interconnection system using the set point so as to transfer a portion of the MVAC from the second distribution network portion to the first distribution network portion.
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公开(公告)号：US10179515B2
公开(公告)日：2019-01-15
申请号：US15175733
申请日：2016-06-07
Applicant: ABB Schweiz AG
Inventor： Dawei Yao , Xiaobo Yang , Chunming Yuan , Chao Yang
Abstract: The application relates to a system for charging a battery of an electrical vehicle. The electrical vehicle charging system of the present application is helpful for decreasing the converter capacity while maintaining the charging capacity and electrical vehicles with various nominal voltages can be charged simultaneously. In one aspect the system for charging an electrical vehicle includes: a plurality of central converters, at least one switch electrically connected to the central converters, at least one transformer electrically connected to an external AC power supply, at least one distributed converter for supplying at least one distributed DC voltage with a level below that of the central converter, and a controller connected to the at least one switch.
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Patent Agency Ranking
公开(公告)号：US11863082B2
公开(公告)日：2024-01-02
申请号：US17427807
申请日：2019-05-06
Applicant: ABB SCHWEIZ AG
Inventor： Xiaobo Yang , Kai Liu , Chunming Yuan , Hailian Xie , Xing Huang
CPC classification number: H02M5/4585 , G01R31/08 , H02H3/44 , H02M1/325 , H02M1/084
Abstract: A power converter includes a power conversion circuit having a first terminal set and a second terminal set, configured to convert power input via one of the first terminal set and the second terminal set and output the converted power via the other of the first terminal set and the second terminal set; a measurement unit; a controller configured to control the power conversion circuit to generate a voltage/current waveform travelling along the first network with a power supplied by a second power source linked to the second terminal set of the power conversion circuit in response to a condition that a change rate of the measurement of the voltage/current exceeds a threshold; and locate a fault on the first network. The power conversion circuit can be re-used for different modes of operation either for power transmission under normal condition or for fault location under fault condition.
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公开(公告)号：US20220123662A1
公开(公告)日：2022-04-21
申请号：US17427807
申请日：2019-05-06
Applicant: ABB SCHWEIZ AG
Inventor： Xiaobo Yang , Kai Liu , Chunming Yuan , Hailian Xie , Xing Huang
Abstract: A power converter includes a power conversion circuit having a first terminal set and a second terminal set, configured to convert power input via one of the first terminal set and the second terminal set and output the converted power via the other of the first terminal set and the second terminal set; a measurement unit; a controller configured to control the power conversion circuit to generate a voltage/current waveform travelling along the first network with a power supplied by a second power source linked to the second terminal set of the power conversion circuit in response to a condition that a change rate of the measurement of the voltage/current exceeds a threshold; and locate a fault on the first network. The power conversion circuit can be re-used for different modes of operation either for power transmission under normal condition or for fault location under fault condition.
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8.发明申请公开(公告)号：US20190267198A1
公开(公告)日：2019-08-29
申请号：US15796838
申请日：2017-10-29
Applicant: ABB Schweiz AG
Inventor： Xiaobo Yang , Bernt Bergdahl , Chunming Yuan , Dawei Yao , Chao Yang
Abstract: An objective of the invention is to provide a bidirectional power valve for current occurring in a high voltage DC conductor, control method therefor, hybrid multi-terminal HVDC System using the same. The bidirectional power valve includes a first power diode arrangement of a first conducting direction, a second power diode arrangement of a second conducting direction; a mechanical disconnector, being connected with the second power diode arrangement in series; wherein: the first power diode arrangement and the series-connected second power diode arrangement and the mechanical disconnector are connected in parallel; and the first conducting direction of the first power diode arrangement and the second conducting direction of the second power diode arrangement are opposite to each other. The current commutation and re-commutation can be achieved with less requirement of the timing accuracy of switching event which makes the usage of a mechanical disconnector and power diode feasible. This will then result in a significant reduction of cost and power transfer losses.
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公开(公告)号：US20190078548A1
公开(公告)日：2019-03-14
申请号：US15999607
申请日：2018-08-20
Applicant: ABB Schweiz AG
Inventor： Xiaobo Yang , Chunming Yuan , Chao Yang
Abstract: A method, system and apparatus for operating a hydraulic turbine. A speed adjustment quantity for the hydraulic turbine and a corresponding change in flow quantity are obtained. A rotation speed of the hydraulic turbine is adjusted based on the speed adjustment quantity. A change ratio of the flow quantity with regard to the speed adjustment quantity is determined based on the speed adjustment quantity and the corresponding change in flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined based on the determined change ratio of flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined change ratio of flow quantity. It enables the hydraulic turbine to track a maximum efficiency operation point under a given power order and water head in real time at a low cost.
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公开(公告)号：US11876367B2
公开(公告)日：2024-01-16
申请号：US17433954
申请日：2019-03-27
Applicant: ABB Schweiz AG
Inventor： Chunming Yuan , Xiaobo Yang , Xing Huang
IPC: H02J1/00
CPC classification number: H02J1/00
Abstract: Embodiments of a modular direct current interconnection device (MDCID) include at least three operation branches, at least one transient branch, and a local controller. Each of the operation branches includes a first terminal coupled to a common node and configured to transmit DC current in a normal mode. The transient branch is coupled between second terminals of different ones of the at least three operation branches and configured to provide a transient DC current path in a fault clearance mode. The local controller is coupled to the operation branches and the transient branch, and the local controller is configured to control operation of the operation branches and the transient branch.
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