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：WO2019226767A1

公开(公告)日：2019-11-28

申请号：PCT/US2019/033514

申请日：2019-05-22

Applicant: ABB SCHWEIZ AG ,  PAN, Zhiguo ,  BALA, Sandeep ,  LIU, Liming ,  SHI, Yuxiang

Inventor： PAN, Zhiguo ,  BALA, Sandeep ,  LIU, Liming ,  SHI, Yuxiang

IPC: H02J1/10 ,  G05F1/67

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：WO2018200506A1

公开(公告)日：2018-11-01

申请号：PCT/US2018/029118

申请日：2018-04-24

Applicant: ABB SCHWEIZ AG ,  PRIETO, Alberto ,  ZANT, Nikolaus ,  BALA, Sandeep ,  HENRIKSEN, Matthew, Lee ,  UPADHYAY, Parag

Inventor： PRIETO, Alberto ,  ZANT, Nikolaus ,  BALA, Sandeep ,  HENRIKSEN, Matthew, Lee ,  UPADHYAY, Parag ,  RADU, Ion, C.

IPC: H01H9/00 ,  H01F29/02 ,  H02J3/38

Abstract: Unique systems, methods, techniques and apparatuses of a modular power transformer are disclosed. One exemplary embodiment is a matrix power transformer including a plurality of block assemblies each including a plurality of transformer modules, each transformer module including a primary winding coupled to an input and a secondary winding coupled to an output, the inputs of each transformer module in one block assembly being coupled together and the outputs of each transformer block being coupled together. One of the secondary windings includes a plurality of taps structured to be selectively coupled to the output of the associated transformer module assembly or another secondary winding of the associated module assembly.

公开(公告)号：WO2019099874A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/061580

申请日：2018-11-16

Applicant: ABB SCHWEIZ AG

Inventor： BALA, Sandeep

IPC: H02M1/10 ,  H02M1/15 ,  H02M1/32 ,  H02M7/155 ,  H02M7/519

Abstract: Unique systems, methods, techniques and apparatuses of an exemplar}' power converter are disclosed. One exemplary embodiment is a power converter comprising a power cell and a transformer. The power cell including a first and second DC input terminal, a first leg including a first and second switching device coupled and a first AC output terminal, a second leg including a third and fourth switching device and a second AC output terminal. The first and second AC output terminals are coupled to the AC power source and structured to receive an AC power from the AC power source. The transformer includes a primary winding, the primary winding being coupled across the first AC output terminal and the second AC output terminal.

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：EP3078094B1

公开(公告)日：2019-01-02

申请号：EP14810101.7

申请日：2014-11-25

Applicant: ABB Schweiz AG

Inventor： BALA, Sandeep

IPC: H02J4/00 ,  H02J3/38

公开(公告)号：EP4246796A3

公开(公告)日：2023-12-27

申请号：EP23185271.6

申请日：2014-01-06

Applicant: ABB SCHWEIZ AG

Inventor： BALA, Sandeep ,  CARR, Joseph

IPC: H02M1/00 ,  H02M1/32 ,  H02M7/483 ,  H02M7/487

Abstract: A power conversion system (100) includes a unipolar bidirectional power converter (102) with DC terminals and a first controller (106), and a bipolar bidirectional power converter (104) with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter (102) and a second controller (108). The first controller (106) is operable to cause only a positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102). The second controller (108) is operable to cause a positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) so that a total voltage of the power conversion system (100) is the sum of the positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) and the positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102).

公开(公告)号：EP3616225A1

公开(公告)日：2020-03-04

申请号：EP18790335.6

申请日：2018-04-24

Applicant: ABB Schweiz AG

Inventor： PRIETO, Alberto ,  ZANT, Nikolaus ,  BALA, Sandeep ,  HENRIKSEN, Matthew, Lee ,  UPADHYAY, Parag ,  RADU, Ion, C.

IPC: H01H9/00 ,  H01F29/02 ,  H02J3/38

公开(公告)号：EP4246796A2

公开(公告)日：2023-09-20

申请号：EP23185271.6

申请日：2014-01-06

Applicant: ABB SCHWEIZ AG

Inventor： BALA, Sandeep ,  CARR, Joseph

IPC: H02M7/483

Abstract: A power conversion system (100) includes a unipolar bidirectional power converter (102) with DC terminals and a first controller (106), and a bipolar bidirectional power converter (104) with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter (102) and a second controller (108). The first controller (106) is operable to cause only a positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102). The second controller (108) is operable to cause a positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) so that a total voltage of the power conversion system (100) is the sum of the positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) and the positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102).

公开(公告)号：EP3058649B1

公开(公告)日：2020-04-15

申请号：EP14790462.7

申请日：2014-10-16

Applicant: ABB Schweiz AG

Inventor： PAN, Zhiguo ,  BALA, Sandeep

IPC: H02M7/25