Title:
METHOD FOR OPERATING AN INVERTER CIRCUIT AND DEVICE FOR CARRYING OUT SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2011/067090
Kind Code:
A3
Abstract:
The invention relates to a method for operating an inverter circuit wherein the inverter circuit has n input phase connections (U1, V1, W1) and p output phase connections (U2, V2, W2), wherein n ≥ 2 and p ≥ 2, (n p) comprises two-pole switching cells (2) for switching at least one positive and at least one negative voltage between the poles, wherein each output phase connection (U2, V2, W2) is serially connected to each input phase connection (U1, V1, W1) via one switching cell (2) each, and each switching cell (2) has actuatable, bi-directional power semiconductor switches having a controlled, uni-directional current conducting direction and a capacitive energy store, wherein the semiconductor power switch of the switching cells (2) are actuated by means of an actuation signal (S1). In order to reduce undesired circulating currents and to compensate the mean voltage deviation of the capacitive energy store of all switching cells (2) to zero, according to the invention at least one inductor (6) is interpolated in each serial connection, wherein one switching cell (2) having an inductor (6) forms a phase component (1) and the actuation signal (S1) is formed for each phase component (1) from a reference signal (Vref, U1) relative to the voltage (U1) via the phase component (1) and from a voltage signal (VL) via the inductor (6) and the voltage signal (VL) is formed via the inductor (6) from a current intermediate target value (ΔiU1) of the current (iU1) by means of the phase component (1). The invention further relates to devices for carrying out said method.
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Inventors:
KORN ARTHUR (CH)
Application Number:
PCT/EP2010/067378
Publication Date:
March 22, 2012
Filing Date:
November 12, 2010
Export Citation:
Assignee:
ABB SCHWEIZ AG (CH)
KORN ARTHUR (CH)
KORN ARTHUR (CH)
International Classes:
H02M5/297
Domestic Patent References:
| WO2003090331A2 | 2003-10-30 | |||
| WO2008067784A1 | 2008-06-12 | |||
| WO2007033852A2 | 2007-03-29 |
Foreign References:
| US20040022081A1 | 2004-02-05 | |||
| DE102005040543A1 | 2007-03-01 |
Other References:
ANTONIOS ANTONOPOULOS ET AL: "On dynamics and voltage control of the Modular Multilevel Converter", POWER ELECTRONICS AND APPLICATIONS, 2009. EPE '09. 13TH EUROPEAN CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 8 September 2009 (2009-09-08), pages 1 - 10, XP031541295, ISBN: 978-1-4244-4432-8
Attorney, Agent or Firm:
ABB PATENT ATTORNEYS (c/o ABB Schweiz AGIntellectual Property, Brown Boveri Strasse 6 Baden, CH)
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