(19)
(11) EP 1 811 644 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
24.10.2007 Bulletin 2007/43

(43) Date of publication:
25.07.2007 Bulletin 2007/30

(21) Application number: 05783233.9

(22) Date of filing: 14.09.2005
(51) International Patent Classification (IPC): 
H02M 7/12(2006.01)
(86) International application number:
PCT/JP2005/016942
(87) International publication number:
WO 2006/040899 (20.04.2006 Gazette 2006/16)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 14.10.2004 JP 2004300310

(71) Applicant: DAIKIN INDUSTRIES, LTD.
Osaka-shi, Osaka 530-8323 (JP)

(72) Inventors:
  • SAKAKIBARA, Kenichi c/o Shiga Plant, DAIKIN INDUSTRIES, LTD.,
    Kusatsu-shi, Shiga 5258526 (JP)
  • MECHI, Abdal c/o Shiga Plant, DAIKIN INDUSTRIES, LTD.,
    Kusatsu-shi, Shiga 5258526 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) CONVERTER CONTROL METHOD AND CONVERTER CONTROL DEVICE


(57) In the present invention, a rectified voltage is controlled in accordance with variations in power supply voltage without having to separately provide a mechanism for detecting a peak value of the power supply voltage. A q-axis voltage command value (Vq*) is generated in a proportioned amount to an end-to-end voltage (Vdc) of a smoothing capacitor (4). A d-axis current command value (Id*) is set to zero, and a d-axis voltage command value (Vd*) is generated based thereon. A pulse width modulator (605) performs pulse width modulation based on the q-axis voltage command value (Vq*) and the d-axis voltage command value (Vd*), and generates a signal that controls switching of a pulse width modulation converter (3).