Title:
CONTROL METHODS FOR PARALLEL-CONNECTED POWER CONVERTERS
Document Type and Number:
WIPO Patent Application WO/2011/000511
Kind Code:
A3
Abstract:
A method is described for controlling a plurality of power converters 1, 2 connected in parallel between an ac arrangement 12 and a common dc link 16, each of the power converters 1, 2 operating in accordance with a pulse width modulation (PWM) strategy and having an independently variable dc link reference voltage. The method comprises modifying an output voltage droop characteristic of at least one of the plurality of parallel-connected power converters 1, 2 by varying the dc link reference voltage of the at least one power converter 1, 2 based on the output current of the at least one power converter 1, 2 and the average of the output currents of the plurality of power converters 1, 2.
Inventors:
FENG CHUNMEI (GB)
MORENO CASTENEDA VEIMAR YOBANY (GB)
WEBB RICHARD START (GB)
KNIGHT JEREMY STEPHEN PREVOST (GB)
MORENO CASTENEDA VEIMAR YOBANY (GB)
WEBB RICHARD START (GB)
KNIGHT JEREMY STEPHEN PREVOST (GB)
Application Number:
PCT/EP2010/003846
Publication Date:
April 21, 2011
Filing Date:
June 29, 2010
Export Citation:
Assignee:
CONVERTEAM TECHNOLOGY LTD (GB)
FENG CHUNMEI (GB)
MORENO CASTENEDA VEIMAR YOBANY (GB)
WEBB RICHARD START (GB)
KNIGHT JEREMY STEPHEN PREVOST (GB)
FENG CHUNMEI (GB)
MORENO CASTENEDA VEIMAR YOBANY (GB)
WEBB RICHARD START (GB)
KNIGHT JEREMY STEPHEN PREVOST (GB)
International Classes:
H02M7/23
Foreign References:
| US20040032755A1 | 2004-02-19 | |||
| EP2020740A1 | 2009-02-04 | |||
| JPH05308777A | 1993-11-19 |
Other References:
ZHIHONG YE ET AL: "Control of circulating current in parallel three-phase boost rectifiers", APEC 2000. FIFTEENTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, vol. 1, 2000, IEEE PISCATAWAY, NJ, USA, pages 506 - 512, XP002561009, ISBN: 0-7803-5864-3
Attorney, Agent or Firm:
SERJEANTS (King Street, Leicester LE1 6RX, GB)
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