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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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公开(公告)号：US20190013711A1
公开(公告)日：2019-01-10
申请号：US15999554
申请日：2018-08-20
Applicant: ABB Schweiz Ag
Inventor： Rajib Mikail , Steven Englebretson , Zhiguo Pan
Abstract: There are disclosed winding configurations for electric machines that employ printed circuit board (PCB) type end winding connections to enable an automatic and faster assembly of the electric machines. The winding configurations provide a compact PCB-type end winding arrangement with an optimal fewer number of turns/bars in the slots of the board to complete the loop of winding connections. The winding configurations have application in three phase or multiple phase inner rotor or outer rotor electric machine topologies
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公开(公告)号：US20180191287A1
公开(公告)日：2018-07-05
申请号：US15908129
申请日：2018-02-28
Applicant: ABB Schweiz AG
Inventor： Sara Ahmed , Zhiguo Pan , Hongrae Kim
CPC classification number: H02P27/047 , H02P23/0077 , H02P27/08
Abstract: A unique system may include a power absorber; an electrical machine coupled to the power absorber and operative to supply mechanical power to the power absorber; a drive coupled to the electrical machine and operative to supply electrical power to drive the electrical machine; and a controller communicatively coupled to the drive. The controller may be configured to execute program instructions to selectively vary a control voltage while maintaining a given torque output of the electrical machine, and to determine, based on varying the control voltage, a minimum current required for the electrical machine to maintain the given torque output.
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公开(公告)号：US10951080B2
公开(公告)日：2021-03-16
申请号：US15999554
申请日：2018-08-20
Applicant: ABB Schweiz Ag
Inventor： Rajib Mikail , Steven Englebretson , Zhiguo Pan
IPC: H02K3/28 , H01F5/04 , H01F41/10 , H02K11/22 , H02K11/225 , H02K3/50 , H02K11/215 , H02K11/21 , H02K1/16 , H02K1/26 , H02K3/12 , H02K17/14 , H02K11/33
Abstract: There are disclosed winding configurations for electric machines that employ printed circuit board (PCB) type end winding connections to enable an automatic and faster assembly of the electric machines. The winding configurations provide a compact PCB-type end winding arrangement with an optimal fewer number of turns/bars in the slots of the board to complete the loop of winding connections. The winding configurations have application in three phase or multiple phase inner rotor or outer rotor electric machine topologies.
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公开(公告)号：US20190372389A1
公开(公告)日：2019-12-05
申请号：US15997120
申请日：2018-06-04
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Adil Oudrhiri , Zichi Zhang , Yu Du
IPC: H02J9/06
Abstract: A resonant turn-off circuit is provided to disconnect an inadequate power source and transfer a load to an alternate power source. In the circuit, a main switch is turned off before the AC cycle of the power source crosses zero. As a result, the main switch may be turned off quickly to transfer electric power supplied to a load to a second power source. The circuit may include resonant switches, a capacitor, a pre-charging power supply and an inductor. When it is desired to turn off the main switch, a resonant switch is turned off to cause a voltage reversal across the switch.
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Patent Agency Ranking
公开(公告)号：US10483693B2
公开(公告)日：2019-11-19
申请号：US15762107
申请日：2015-09-24
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Yu Du , Emanuele Borla , Rajib Mikail , Hongrae Kim
IPC: H01R13/53 , H01R13/635 , H01R24/78 , H01R13/14 , H01R103/00 , H01R24/28 , H01R13/502 , H01R13/66 , H01R24/76
Abstract: A sliding contact assembly for a DC electrical outlet receives plug contacts of an electrical plug. The assembly includes sliding contact structure having a base and a plurality of electrical sliding contacts fixed to the base. A housing includes a first end wall having an internal top surface and second end wall opposing the first end wall. The second end wall has an internal bottom surface. The housing has a side wall structure defining an internal chamber between the top surface and the bottom surface. The sliding contact structure is disposed in the housing to be movable linearly within the chamber. A spring is disposed between the top surface of the housing and a surface of the base so that when the plug contacts are completely disconnected from the associated sliding contacts, the spring rapidly forces the sliding contacts away from the plug contacts, reducing arcing energy there-between.
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公开(公告)号：US10177633B2
公开(公告)日：2019-01-08
申请号：US14581927
申请日：2014-12-23
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Zhiguo Pan , Mario Schweizer , Darren Dale Tremelling , Waqas Mahmood Arshad
IPC: H02K11/00 , H02K21/14 , H02K17/16 , H02K3/12 , H02K3/28 , H02K9/06 , H02K11/04 , H02K3/52 , H02K11/33 , H02K1/14 , H02K5/22
Abstract: The subject matter described herein includes a multiphase fractional slot concentrated winding machine. One such machine includes a machine module including a rotor and a stator. The stator includes a plurality of radially extending teeth. Each tooth is individually wound with a coil. The machine further includes a multiphase series converter circuit physically connected to an end of the machine module to energize the coils for multiphase operation.
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公开(公告)号：US09876456B2
公开(公告)日：2018-01-23
申请号：US15170420
申请日：2016-06-01
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Mario Schweizer , Ghanshyam Shrestha
Abstract: A bridge converter for a multi-phase electrical machine has a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller. A multi-phase electrical machine has a plurality of stator windings and a bridge converter having a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller.
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公开(公告)号：US20220247304A1
公开(公告)日：2022-08-04
申请号：US17616596
申请日：2019-06-03
Applicant: Adil OUDRHIRI , ABB Schweiz AG
Inventor： Adil Oudrhiri , Debrup Das , Zhiguo Pan
Abstract: A static transfer switch is provided for supplying power to a load alternately from two different power sources. Preferably, switching between the two power sources occurs within one electrical cycle. In order to control inrush currents and reduce disruption during power transfers between the two power sources, switches are provided to configure which input phases are connected to the output phases.
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公开(公告)号：US20210409016A1
公开(公告)日：2021-12-30
申请号：US16912775
申请日：2020-06-26
Applicant: ABB Schweiz AG
Inventor： Liming Liu , Jing Xu , Zhiguo Pan
IPC: H03K17/082 , H03K5/24 , H03K3/037
Abstract: Systems, methods, techniques and apparatuses of power switch protection are disclosed. One exemplary embodiment is a protection system for a power switch comprising a resistor and a detection circuit. The resistor is coupled in series with a decoupling capacitor. The detection circuit is structured to receive a voltage of the resistor, determine a short circuit is occurring based on the received electrical characteristic, and transmit a fault trigger signal in response to determining the short circuit is occurring.
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