公开(公告)号：CA2957833A1

公开(公告)日：2016-02-18

申请号：CA2957833

申请日：2014-08-11

Applicant: ABB SCHWEIZ AG

Inventor： TOWNSEND CHRISTOPHER ,  ZELAYA DE LA PARRA HECTOR

IPC: H02M7/483

Abstract: A method of controlling a multilevel converter, a computer program and a controller for a converter is provided. The method includes determining a transition voltage (vstep) from a control period (k) to a following control period (k+1), analyzing (104) the switching cells (SC1, SC2, SC3, SCn) of each phase leg, selecting (111) capacitors to provide the transition voltage and synthesize the output voltage for the following control period (k+1), and connecting (113) the selected capacitors during the following control period (k+1). Especially, the analyzing (104) of each switching cell (SC1; SC2; SC3; SCn) comprises analyzing (104) a first switching leg (SL1) and a second switching leg (SL1) of the switching cell (SC1; SC2; SC3; SCn), and the method includes determining (105) whether a change of state of the first switching leg (SL1) would contribute to the direction of the transition voltage, and determining (105) whether a change of state of the second switching leg (SL2) would contribute to the direction of the transition voltage, and determining (107) the internal conditions of each of the first (SL1) and the second switching leg (SL2) that are determined as contributing to the transition. Thus, the two legs of the H-bridge are analyzed separately. The selecting (111) of capacitors is performed by selecting (111) the capacitors of the switching legs (SL1; SL2) of the phase leg (PA, PB, PC) for the transition voltage on the basis of the determined internal conditions of the switching legs (SL1, SL2), including comparing the internal conditions of all the switching legs (SL1; SL2) of the phase leg (PA, PB, PC). A controller (40) is configured to control the multilevel converter by performing the method.

公开(公告)号：CA2957612A1

公开(公告)日：2016-02-11

申请号：CA2957612

申请日：2014-08-08

Applicant: ABB SCHWEIZ AG

Inventor： NAMI ALIREZA ,  TOWNSEND CHRISTOPHER

IPC: H02M7/483

Abstract: A switching cell (SC1, SC2) for a chain link is provided, which switchi ng cell (SC1, SC2) comprising a first side (S1 ) comprising a first terminal (T1 ) and a second terminal (T2), a second side (S2) comprising a third termi nal (T3) and a fourth terminal (T4), a first switchi ng unit (SU 1 ), a second switchi ng unit (SU2), and a first and a second capacitor unit (C1, C2). The first terminal (T1 ) is connected to the second termi nal (T2) via the first capacitor unit (C1 ), wherein the first capacitor unit (C1 ) has its positive side facing the first terminal (T1 ). The third termi nal (T3) is connected to the fourth terminal (T4) via the second capacitor unit (C2), wherei n the second capacitor has its positive side faci ng the fourth terminal (T4). The second terminal (T2) is connected to the fourth terminal (T4) via the second switching unit (SU2). The switchi ng cell also comprises a third capacitor unit (C3), and the first terminal (T1 ) is connected to the third terminal (T3) via a first series connection comprising the first switching unit (SU 1 ) and the third capacitor unit (C3), wherein the third capacitor unit (C3) has its positive side facing the third terminal (T3). A switchi ng module (SM) comprises at least one such switching cell (SC1, SC2). Preferably, the switching module (SM) comprises at least two such switching cells (SC1, SC2), wherein the first switchi ng cell (SC1 ) and the second switching cell (SC2) are connected i n series in opposing directions, wherein the second side (S21 ) of the first switching cell (SC1 ) is connected to the second side (S22) of the second switching cell (SC2). A chain link (CL) comprising a number of switching modules in serial connection is also provided.

公开(公告)号：DE112016006420T5

公开(公告)日：2018-11-15

申请号：DE112016006420

申请日：2016-02-12

Applicant: ABB SCHWEIZ AG

Inventor： TOWNSEND CHRISTOPHER ,  NAMI ALIREZA ,  RAHIMO MUNAF ,  ZELAYA DE LA PARRA HECTOR ,  CANALES FRANCISCO ,  ALVES ROBERTO ,  NILSSON TORSTEN

IPC: H02P27/14 ,  H02M7/483 ,  H02M7/49

Abstract: Die vorliegende Erfindung betrifft ein Submodul 3 für einen Phasenzweig 2 eines kaskadierten Stromrichters. Das Submodul umfasst eine erste Halbleiterstruktur 4a, die einen ersten Strompfad durch das Submodul bildet, und eine zweite Halbleiterstruktur 4b, die parallel zu der ersten Halbleiterstruktur 4a geschaltet ist, und einen zweiten Strompfad durch das Submodul bildet. Zumindest die erste Halbleiterstruktur 4a umfasst einen Gleichstromkondensator 5 und zumindest die zweite Halbleiterstruktur 4b umfasst eine Reverse-Blocking-Anordnung 8. Das Submodul ist dazu eingerichtet, dass, wenn es im Bypass-Modus ist, Strom durch die Reverse-Blocking-Anordnung fließen kann.

公开(公告)号：CA2957833C

公开(公告)日：2018-04-03

申请号：CA2957833

申请日：2014-08-11

Applicant: ABB SCHWEIZ AG

Inventor： TOWNSEND CHRISTOPHER ,  ZELAYA DE LA PARRA HECTOR

IPC: H02M7/483

Abstract: A method of controlling a multilevel converter, a computer program and a controller for a converter is provided. The method includes determining a transition voltage (vstep) from a control period (k) to a following control period (k+1), analyzing (104) the switching cells (SC1, SC2, SC3, SCn) of each phase leg, selecting (111) capacitors to provide the transition voltage and synthesize the output voltage for the following control period (k+1), and connecting (113) the selected capacitors during the following control period (k+1). Especially, the analyzing (104) of each switching cell (SC1; SC2; SC3; SCn) comprises analyzing (104) a first switching leg (SL1) and a second switching leg (SL1) of the switching cell (SC1; SC2; SC3; SCn), and the method includes determining (105) whether a change of state of the first switching leg (SL1) would contribute to the direction of the transition voltage, and determining (105) whether a change of state of the second switching leg (SL2) would contribute to the direction of the transition voltage, and determining (107) the internal conditions of each of the first (SL1) and the second switching leg (SL2) that are determined as contributing to the transition. Thus, the two legs of the H-bridge are analyzed separately. The selecting (111) of capacitors is performed by selecting (111) the capacitors of the switching legs (SL1; SL2) of the phase leg (PA, PB, PC) for the transition voltage on the basis of the determined internal conditions of the switching legs (SL1, SL2), including comparing the internal conditions of all the switching legs (SL1; SL2) of the phase leg (PA, PB, PC). A controller (40) is configured to control the multilevel converter by performing the method.

公开(公告)号：CA2957612C

公开(公告)日：2018-01-02

申请号：CA2957612

申请日：2014-08-08

Applicant: ABB SCHWEIZ AG

Inventor： NAMI ALIREZA ,  TOWNSEND CHRISTOPHER

IPC: H02M7/483

Abstract: A switching cell (SC1, SC2) for a chain link is provided, which switchi ng cell (SC1, SC2) comprising a first side (S1 ) comprising a first terminal (T1 ) and a second terminal (T2), a second side (S2) comprising a third termi nal (T3) and a fourth terminal (T4), a first switchi ng unit (SU 1 ), a second switchi ng unit (SU2), and a first and a second capacitor unit (C1, C2). The first terminal (T1 ) is connected to the second termi nal (T2) via the first capacitor unit (C1 ), wherein the first capacitor unit (C1 ) has its positive side facing the first terminal (T1 ). The third termi nal (T3) is connected to the fourth terminal (T4) via the second capacitor unit (C2), wherei n the second capacitor has its positive side faci ng the fourth terminal (T4). The second terminal (T2) is connected to the fourth terminal (T4) via the second switching unit (SU2). The switchi ng cell also comprises a third capacitor unit (C3), and the first terminal (T1 ) is connected to the third terminal (T3) via a first series connection comprising the first switching unit (SU 1 ) and the third capacitor unit (C3), wherein the third capacitor unit (C3) has its positive side facing the third terminal (T3). A switchi ng module (SM) comprises at least one such switching cell (SC1, SC2). Preferably, the switching module (SM) comprises at least two such switching cells (SC1, SC2), wherein the first switchi ng cell (SC1 ) and the second switching cell (SC2) are connected i n series in opposing directions, wherein the second side (S21 ) of the first switching cell (SC1 ) is connected to the second side (S22) of the second switching cell (SC2). A chain link (CL) comprising a number of switching modules in serial connection is also provided.