DEVICE, METHOD, AND PROGRAM FOR CONTROLLING CONVERTER, AND AIR CONDITIONER

Title:

DEVICE, METHOD, AND PROGRAM FOR CONTROLLING CONVERTER, AND AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2014/034207

Kind Code:

A1

Abstract:

In order to maintain a power factor of approximately 1 regardless of the load, this converter control device (4) is equipped with: a reactive current calculation unit (21) that calculates the reactive current (Iq) using the current detection values (Ir, It) for the R phase and the T phase, and the voltage phase (θ) of the R phase; a correction amount calculation unit (22) that calculates the voltage phase difference of the R phase as a phase correction amount (ø) for making the reactive current (Iq) zero; a phase correction unit (23) that corrects the voltage phase (θ)of the R phase using the phase correction amount calculated by the correction amount calculation unit (22); a three-phase voltage command determination unit (24) that determines a phase voltage command corresponding to each phase on the basis of a prescribed voltage command value (k) and the corrected R-phase voltage phase (θ'); and a PWM signal generation unit (25) that uses the phase voltage commands to generate drive signals for the switch unit corresponding to each phase.

Inventors:

SUMITO KIYOTAKA (JP)
KANIE TETSUO (JP)
SHIMIZU KENJI (JP)
SUMIYA ATSUYUKI (JP)
YOSHIDA JUNICHI (JP)
MIYATA MASAYUKI (JP)

Application Number:

PCT/JP2013/065203

Publication Date:

March 06, 2014

Filing Date:

May 31, 2013

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

H02M7/12; F24F11/02

Domestic Patent References:

WO2005006531A1

2005-01-20

Foreign References:

JPH08214550A	1996-08-20
JP2004312862A	2004-11-04
JP2010110109A	2010-05-13
JP2008054461A	2008-03-06
JP2006109583A	2006-04-20
JPH07213074A	1995-08-11
JPH10164845A	1998-06-19

Other References: