公开(公告)号：WO2018194673A1

公开(公告)日：2018-10-25

申请号：PCT/US2017/028917

申请日：2017-04-21

Applicant: ABB SCHWEIZ AG ,  BALA, Sandeep ,  KADAVELUGU, Arun

Inventor： BALA, Sandeep ,  KADAVELUGU, Arun

IPC: H02M7/02 ,  H02M7/483 ,  H02M7/515

Abstract: A converter system includes a DC bus for each phase of an input AC power signal; a first switching cell for each phase, including first two active switches coupled in series across the DC bus and forming a first switching cell AC pole therebetween, the first switching cell AC pole being coupled to a respective phase; and a second switching cell for each phase, including second two active switches coupled in series across the DC bus and forming a second switching cell AC pole therebetween, The second switching cell AC poles are coupled to each other to form a flying neutral. One of the first switching cell and the second switching cell switches at a frequency at least an order of magnitude greater than the line frequency. The other of the first switching cell and the second switching cell switches at a frequency approximately equal to the line frequency.

公开(公告)号：EP4443448A1

公开(公告)日：2024-10-09

申请号：EP24168783.9

申请日：2024-04-05

Applicant: ABB SCHWEIZ AG

Inventor： YELAVERTHI, Dorai ,  SURYANARAYANA, Harish ,  KADAVELUGU, Arun

IPC: H01F3/10 ,  H01F37/00 ,  H01F3/14

CPC classification number: H01F3/14 ,  H01F37/00 ,  H01F3/10

Abstract: A device includes a core structure including a first end plate and a second end plate. The first end plate and second end plate include a first portion and a second portion that extend from opposing sides of a third portion and include an increasing cross-sectional area configured to provide soft saturation properties in response to increasing electrical current. The core structure may further include a coil member and a core section. The core section is disposed between the first plate member and second plate member. The core section includes a first core member, a second core member, and a central disc member. The core section also includes a channel formed between the central disc member and the first core member and the second core member to enable the coil member to circumferentially wind around the central disc member.

公开(公告)号：EP3435099A1

公开(公告)日：2019-01-30

申请号：EP18184984.5

申请日：2018-07-23

Applicant: ABB Schweiz AG

Inventor： AELOIZA, Eddy ,  KADAVELUGU, Arun ,  PUUKKO, Joonas ,  LIU, Liming ,  SJOROOS, Jukka-Pekka

IPC: G01R31/26 ,  G01R31/28

Abstract: Unique systems, methods, techniques and apparatuses of semiconductor failure prognostication. One exemplary embodiment is a power converter (123) comprising a semiconductor switch (110) and a converter control system (121). The converter control system (121) is configured to turn on the semiconductor switch (110), measure a first voltage and a current during reverse conduction, estimate junction temperature of the semiconductor device (110), turn off the semiconductor device (110), measure a second voltage after turning off the semiconductor device (110), determine a resistance value using the second voltage measurement, determine an expected resistance value, predict a failure of the semiconductor device (110) using the resistance value and the expected resistance value, and transmit a semiconductor device failure warning.

公开(公告)号：EP3613134A1

公开(公告)日：2020-02-26

申请号：EP17906086.8

申请日：2017-04-21

Applicant: ABB Schweiz AG

Inventor： BALA, Sandeep ,  KADAVELUGU, Arun

IPC: H02M7/02 ,  H02M7/483 ,  H02M7/515

公开(公告)号：EP4451298A1

公开(公告)日：2024-10-23

申请号：EP24171018.5

申请日：2024-04-18

Applicant: ABB SCHWEIZ AG

Inventor： SURYANARAYANA, Harish ,  YELAVERTHI, Dorai ,  KADAVELUGU, Arun

IPC: H01F17/06 ,  H01F27/28 ,  H01F27/34

Abstract: A device may include a core structure having low permeability characteristics and defining a first cross-sectional area, a coil member including one or more loops that winds around the core structure and defines a second cross-sectional area. The second cross-sectional area is between 1.2 to 5 times larger than the first cross-sectional area. The device may include a frame member positioned around the core structure or a portion thereof and the coil member may wind around the frame member to define the second cross-sectional area. The core structure may be composed of a low permeability magnetic material having a low relative permeability. The core structure may be composed of a high permeability magnetic material and the core structure may further include an air gap structure to enable the core structure to demonstrate the low permeability characteristics.