VARIABLE-SPEED POWER GENERATION DEVICE AND CONTROL METHOD THEREFOR

Title:

VARIABLE-SPEED POWER GENERATION DEVICE AND CONTROL METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2011/087067

Kind Code:

A1

Abstract:

Disclosed is a variable-speed power generation device that ensures a speed-variability range for a wound-rotor induction generator while supplying reactive power in response to reactive-power supply commands from a power system. The disclosed variable-speed power generation device (1) is provided with: a prime mover that utilizes natural energy to generate power; a power generator (6) that generates electricity from the power generated by the prime mover and has a stator, provided with a first winding connected to a power system (2), and a rotor, provided with a secondary winding; a power converter (17) connected to the stator side and the rotor side; and a power converter controller (21). The power converter (17) does not supply reactive power to the power system (2), and when a reactive-power supply command that causes reactive power to be supplied to the power system (2) is received from the power system (2), the power converter controller (21) runs the power generator (6) at a speed set greater than or equal to the synchronous speed, thereby increasing the reactive power supplied to the power system (2).

Inventors:

WAKASA TSUYOSHI (JP)
YASUGI AKIRA (JP)
MATSUSHITA TAKATOSHI (JP)
NAKA TAKEHIRO (JP)
NAKASHIMA TAKUMI (JP)

Application Number:

PCT/JP2011/050478

Publication Date:

July 21, 2011

Filing Date:

January 13, 2011

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
WAKASA TSUYOSHI (JP)
YASUGI AKIRA (JP)
MATSUSHITA TAKATOSHI (JP)
NAKA TAKEHIRO (JP)
NAKASHIMA TAKUMI (JP)

International Classes:

H02P9/00; F03D9/00; H02P9/04

Foreign References:

JP2009296766A	2009-12-17
JP2005033984A	2005-02-03
JPH04275087A	1992-09-30
JPS5556499A	1980-04-25
JP2008011607A	2008-01-17

Other References: