Title:
CURRENT ZERO CROSSING IN AN INVERTER
Document Type and Number:
WIPO Patent Application WO/2014/040971
Kind Code:
A3
Abstract:
A power electronic unit which comprises a controller (60) and at least one half-bridge (100) with a first switching element (2) and with a second switching element (3) and has a phase current output (1) between the two switching elements, in which the first switching element and the second switching element can be switched in push-pull mode for a switching time at a clock frequency, and in which the controller sets the switching time and/or the clock frequency as a manipulated variable in order to provide a predefined amplitude, frequency and phase angle of the phase current at the phase current output (6) in a switching cycle, with the result that the amplitude, the frequency and the phase angle at the phase current output can be predicted for the switching cycle, the sign of the phase current is used as an observation variable and the determined switching time for the switching cycle depends on the direction of the predicted phase current.
Inventors:
GORKA MATTHIAS (DE)
Application Number:
PCT/EP2013/068677
Publication Date:
January 22, 2015
Filing Date:
September 10, 2013
Export Citation:
Assignee:
BAYERISCHE MOTOREN WERKE AG (DE)
International Classes:
H02M7/539; H02M7/5387
Foreign References:
| DE102011056493A1 | 2012-08-16 | |||
| US5550450A | 1996-08-27 | |||
| EP1645885A1 | 2006-04-12 |
Other References:
QINGRONG ZENG ET AL: "Development of an SVPWM-based predictive current controller for three-phase grid-connected VSI", CONFERENCE RECORD OF THE 2005 IEEE INDUSTRY APPLICATIONS CONFERENCE FORTIETH IAS ANNUAL MEETING 2-6 OCT. 2005 KOWLOON, HONG KONG, CHINA, IEEE, CONFERENCE RECORD OF THE 2005 IEEE INDUSTRY APPLICATIONS CONFERENCE FORTIETH IAS ANNUAL MEETING (IEEE CAT., vol. 4, 2 October 2005 (2005-10-02), pages 2395 - 2400, XP010842744, ISBN: 978-0-7803-9208-3, DOI: 10.1109/IAS.2005.1518796
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