Title:
MOTOR DRIVE CIRCUIT AND PERMANENT MAGNET SYNCHRONOUS MOTOR
Document Type and Number:
WIPO Patent Application WO/2013/111326
Kind Code:
A1
Abstract:
A motor control circuit (1) according to the present invention, includes: a magnetic pole position detection section (11) which detects the rotational position of a rotor (9) of a permanent magnet synchronous motor (7); a voltage output section (3) which generates a drive voltage for the permanent magnet synchronous motor (7) by converting a direct current voltage; a voltage control section (5) which generates a modulated wave on the basis of the rotational position and a rotational speed control signal for controlling the rotational speed of the rotor (9) and controls the voltage output section (3) on the basis of the result of comparing the modulated wave and a carrier wave; a voltage phase adjustment section (12) which determines the phase of the modulated wave that the voltage control section (5) generates on the basis of the rotational speed control signal and an offset signal, and causes the voltage control section (5) to generate a modulated wave with the determined phase; and an offset generation section (13) which generates the offset signal. The voltage phase adjustment section (12) determines the phase by means of a differential amplifier circuit which receives the rotational speed control signal and the offset signal as input.
Inventors:
HATAKEYAMA KAZUNORI (JP)
YAMADA MICHIO (JP)
ASO HIROKI (JP)
YAMADA MICHIO (JP)
ASO HIROKI (JP)
Application Number:
PCT/JP2012/051827
Publication Date:
August 01, 2013
Filing Date:
January 27, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
HATAKEYAMA KAZUNORI (JP)
YAMADA MICHIO (JP)
ASO HIROKI (JP)
HATAKEYAMA KAZUNORI (JP)
YAMADA MICHIO (JP)
ASO HIROKI (JP)
International Classes:
H02P21/00; H02P27/04
Domestic Patent References:
| WO2011111262A1 | 2011-09-15 |
Foreign References:
| JP2009303287A | 2009-12-24 | |||
| JP2007275827A | 2007-10-25 | |||
| JP2011114995A | 2011-06-09 | |||
| JP2003189666A | 2003-07-04 | |||
| JP2011114995A | 2011-06-09 | |||
| JP2009303287A | 2009-12-24 |
Other References:
See also references of EP 2808997A4
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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Claims: