Title:
MOTOR DRIVE DEVICE AND REFRIGERATOR UTILIZING SAME
Document Type and Number:
WIPO Patent Application WO/2013/111575
Kind Code:
A1
Abstract:
This motor drive device has: a position detection means (5) that detects a rotational position from a counter electromotive voltage generated by the rotation of a brushless DC motor (4); and an inverter (3) that generates a waveform with an arbitrary frequency on the basis of a position detection signal and drives the brushless DC motor (4). The position detection means (5) has: a phase voltage detection unit (5a) for detecting voltages of respective phases of the brushless DC motor (4); a reference voltage setting unit (5c) for setting a reference voltage; a filter unit (5b) for removing high-frequency components; and a comparison unit (5d) for comparing outputs of the reference voltage setting unit (5c) and the filter unit (5b).
Inventors:
TANAKA HIDEHISA
MAEDA SHIRO
TAKEOKA YOSHINORI
MAEDA SHIRO
TAKEOKA YOSHINORI
Application Number:
PCT/JP2013/000301
Publication Date:
August 01, 2013
Filing Date:
January 23, 2013
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H02P6/18; H02P27/06
Foreign References:
| JP2000060178A | 2000-02-25 | |||
| JP2008283769A | 2008-11-20 | |||
| JP2011010476A | 2011-01-13 |
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
Hiroki Naito (JP)
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