公开(公告)号：US20190033362A1

公开(公告)日：2019-01-31

申请号：US15659096

申请日：2017-07-25

Applicant: ABB Schweiz AG

Inventor： Eddy Aeloiza ,  Arun Kadavelugu ,  Joonas Puukko ,  Liming Liu ,  Jukka-Pekka Sjoroos

IPC: G01R31/26 ,  H01L29/16 ,  H01L29/78 ,  H03K17/687

CPC classification number: G01R31/2621 ,  G01R31/2642 ,  G01R31/2817 ,  H01L29/1608 ,  H01L29/7805 ,  H03K17/687

Abstract: Unique systems, methods, techniques and apparatuses of semiconductor failure prognostication. One exemplary embodiment is a power converter comprising a semiconductor switch and a converter control system. The converter control system is configured to turn on the semiconductor switch, measure a first voltage and a current during reverse conduction, estimate junction temperature of the semiconductor device, turn off the semiconductor device, measure a second voltage after turning off the semiconductor device, determine a resistance value using the second voltage measurement, determine an expected resistance value, predict a failure of the semiconductor device using the resistance value and the expected resistance value, and transmit a semiconductor device failure warning.

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

IPC: H02J3/38 ,  H02M1/12 ,  H02M3/155

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.

公开(公告)号：US11031846B2

公开(公告)日：2021-06-08

申请号：US16297039

申请日：2019-03-08

Applicant: ABB Schweiz AG

Inventor： Zach Pan ,  Liming Liu ,  Colin Tschida

IPC: H02K9/22 ,  H02K11/33 ,  H01L23/38 ,  H02K5/04 ,  H01L35/30

Abstract: A combined electric motor and motor drive are provided. The electric motor and motor drive are attached together to form a co-packaged unit. In the co-packaged electric motor and motor drive, both the motor drive and the electric motor generate heat. A thermoelectric cooler is provided that may transfer heat away from the motor drive. The thermoelectric cooler may also insulate the motor drive from the heat generated by the motor.

公开(公告)号：US10559536B2

公开(公告)日：2020-02-11

申请号：US16018933

申请日：2018-06-26

Applicant: ABB Schweiz AG

Inventor： Sheng Zhong ,  Jing Xu ,  Liming Liu ,  Elio Alberto Perigo

IPC: H01L23/552 ,  H01L23/498 ,  H05K9/00 ,  H01L21/3205 ,  H01L23/538 ,  H05K1/18 ,  H05K1/02 ,  H05K3/18 ,  H01L21/285 ,  H01L21/288 ,  H05K3/16

Abstract: A multi-layered conductor comprising one or more conductor layers of an electrically conductive material and one or more shielding layers of a soft magnetic material. The shielding layer can be coated onto the conductor layer and has a lower conductivity and a higher magnetic permeability than the electrically conductive material of conductor layers. The shielding layer can, at least when alternating current (AC) flows through the multi-layered conductor at relatively high frequencies, provide a separate power path for at least a portion of the high frequency AC current, as well as absorb at least a portion of the high frequency noises associated with that separated high frequency AC current. Additionally, the shielding layer can be separated from the conductor layer at an output end of the multi-layered conductor so that output ends of the shielding layer and conductor layer can be electrically connected to different electrical devices or components.

公开(公告)号：US20170371367A1

公开(公告)日：2017-12-28

申请号：US15194058

申请日：2016-06-27

Applicant: ABB Schweiz AG

Inventor： Liming Liu ,  Jing Xu

IPC: G05F3/08 ,  H02M7/533

CPC classification number: G05F3/08 ,  H02M1/08 ,  H02M3/06 ,  H02M3/156 ,  H02M7/533 ,  H02M7/537 ,  H02M2001/007 ,  H02M2007/4815

Abstract: Unique systems, methods, techniques and apparatuses of a power converter are disclosed. One exemplary embodiment is an electrical power conversion system comprising a first converter stage, a second converter stage, a third converter stage, and a control system. The first converter stage is operable to boost DC power received from a DC power source. The second converter stage is operable to boost DC power received from the first converter stage. The third converter stage includes an inverter. The control system is structured to receive as input voltage (Vpv) and current (Ipv) output by the DC power source, voltage (Vdc) output by the second controller stage, and voltage (Vac) and a current (Iac) which are output by the third stage to an AC electrical power system, provide a control command for the first converter stage, and process the information of Vdc, Vac and Iac to provide control commands for the inverter switches.