METHOD AND APPARATUS FOR DYNAMIC LOAD SHARING

WIPO Patent Application WO/2010/034821

A3

A method for providing dynamic load sharing between a first and a second three phase system is disclosed, wherein the first and second three phase system are connected to a first and second three phase interleaved winding in a generator. The method comprises determining a first q-axis control signal for the first three phase system and a second q-axis control signal for the second three phase system based on a torque and/or power demand for the generator, determining a first d-axis control signal for the first three phase system and a second d-axis control signal for the second three phase system based on a coupling effect between the first and second three phase systems, and adjusting the q-axis control signals and d-axis control signals by including at least one feed forward compensation signal, wherein said at least one feed forward compensation signal is based on a coupling effect between the first and second three phase systems.

HELLE LARS (DK)
LARSEN KIM B (DK)
TRIPATHI ANSHUMAN (SG)
CAO SHU YU (SG)

PCT/EP2009/062465

May 20, 2010

September 25, 2009

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VESTAS WIND SYS AS (DK)
HELLE LARS (DK)
LARSEN KIM B (DK)
TRIPATHI ANSHUMAN (SG)
CAO SHU YU (SG)

H02P9/10

US6008616A	1999-12-28
US20030085627A1	2003-05-08
JPH01198264A	1989-08-09
EP1544987A1	2005-06-22
EP1330020A2	2003-07-23
DE19752241A1	1999-06-02

SCHIFERL R F ET AL: "Six Phase Synchronous Machine with AC and DC Stator Connections, Part II: Harmonic Studies and a Proposed Uninterruptible Power Supply Scheme", IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, IEEE INC. NEW YORK, US, vol. PAS-100, no. 8, 1 August 1983 (1983-08-01), pages 2694 - 2701, XP011170262, ISSN: 0018-9510

JOHANSSON, Magnus (Box 1066, Helsingborg, SE)

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