公开(公告)号：WO2022156965A1

公开(公告)日：2022-07-28

申请号：PCT/EP2021/085885

申请日：2021-12-15

Applicant: ABB SCHWEIZ AG

Inventor： ZHELEV, Deyan ,  BAECHLE, Matthias ,  MEIER, Georg

IPC: H02P9/12 ,  H02K19/38 ,  H02K19/26 ,  H02K19/36

Abstract: A de-exciting system (15) for dissipating energy from an inductive circuit (1, 2) that comprises at least one coil (1), adapted to be attached to said inductive circuit (1, 2) and comprising: • a series connection of a discharge resistor (4) and a unidirectional discharge switching element (6), said series connection being arranged such that, if the de-exciting system (15) is attached to the inductive circuit (1, 2) and the discharge switching element (6) is in a conducting state, a closed conducting path comprising the coil (1) and the discharge resistor (4) is formed; • a unidirectional bypass switching element (5) that is connected in parallel to the discharge resistor (4) such that, if the de-exciting system (15) is attached to the inductive circuit (1, 2) and both the discharge switching element (6) and the bypass switching element (5) are in a conducting state, a closed conducting path comprising the coil (1), the discharge switching element (6), and the bypass switching element (5) is formed; and control means configured to: in a first de-excitation phase, switch both the discharge switching element (6) and the bypass switching element (5) into a conducting state, and in a second de-excitation phase, switch the bypass switching element (5) into a non-conducting state, while keeping the discharge switching element (6) in the conducting state.

公开(公告)号：WO2018193106A1

公开(公告)日：2018-10-25

申请号：PCT/EP2018/060216

申请日：2018-04-20

Applicant: ABB SCHWEIZ AG

Inventor： BAECHLE, Matthias ,  WIESER, Rudolf ,  AL-HOKAYEM, Peter ,  ROHR, Eduardo

IPC: H02P9/14 ,  H02J3/38

Abstract: The invention relates to a power generation system, comprising a synchronous generator (3) for converting mechanical power into electrical power at an output side configured for connecting an AC power grid (1), a first rectifier (12) and a second rectifier (13) each having an AC side (14) connected to the output side of the generator (3) and a DC side (15), an exciter (9) configured for exciting the, and a selector device (18) having an input side (17) and an output side (19), the input side (17) connected to the DC side (15) of the first rectifier (12) and to the DC side (15) of the second rectifier (13) and the output side (19) connected to the exciter (9), whereby the selector device (18) is configured for switching the DC sides (15) in series or in parallel or for transmitting DC power from the first rectifier (12) and the second rectifier (13) corresponding to an arbitrary split ratio to the output side (19).

公开(公告)号：EP3613137A1

公开(公告)日：2020-02-26

申请号：EP18717398.4

申请日：2018-04-20

Applicant: ABB Schweiz AG

Inventor： BAECHLE, Matthias ,  WIESER, Rudolf ,  AL-HOKAYEM, Peter ,  ROHR, Eduardo

IPC: H02P9/14 ,  H02J3/38

公开(公告)号：EP4033657A1

公开(公告)日：2022-07-27

申请号：EP21153278.3

申请日：2021-01-25

Applicant: ABB Schweiz AG

Inventor： ZHELEV, Deyan ,  BAECHLE, Matthias ,  MEIER, Georg

IPC: H02P9/12 ,  H02K19/38

Abstract: A de-exciting system (15) for dissipating energy from an inductive circuit (1, 2) that comprises at least one coil (1), adapted to be attached to said inductive circuit (1, 2) and comprising:
• a series connection of a discharge resistor (4) and a unidirectional discharge switching element (6), said series connection being arranged such that, if the de-exciting system (15) is attached to the inductive circuit (1, 2) and the discharge switching element (6) is in a conducting state, a closed conducting path comprising the coil (1) and the discharge resistor (4) is formed;
• a unidirectional bypass switching element (5) that is connected in parallel to the discharge resistor (4) such that, if the de-exciting system (15) is attached to the inductive circuit (1, 2) and both the discharge switching element (6) and the bypass switching element (5) are in a conducting state, a closed conducting path comprising the coil (1), the discharge switching element (6), and the bypass switching element (5) is formed; and
control means configured to: in a first de-excitation phase, switch both the discharge switching element (6) and the bypass switching element (5) into a conducting state, and in a second de-excitation phase, switch the bypass switching element (5) into a non-conducting state, while keeping the discharge switching element (6) in the conducting state.