Title:
HEAT PUMP DEVICE, AIR-CONDITIONER, AND REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2014/049867
Kind Code:
A1
Abstract:
A heat pump that has a compressor equipped with a motor for which sensorless vector control is possible even at a low rotation speed or under a low load is obtained while the cost thereof is suppressed. This heat pump device is equipped with a refrigerant compressor (14) that is driven by a motor (21), an inverter unit (12) for applying a voltage to the motor (21), current sensors (26a, 26b) for detecting a motor current, and an inverter control unit (13) for outputting a drive signal to the inverter unit (12). The inverter control unit (13) is equipped with a voltage command computation part (25) and a drive signal generation section (23). The drive signal generation section (23) is equipped with an amplitude/phase determination part (33) that determines a refrigerant compression amount required of the compressor (14) in accordance with signals from the current sensors (26a, 26b) so as to determine an amplitude and a phase in order for the drive signal generation section (23) to generate a drive signal. When the motor (21) is operating at a low rotation speed or under a low load, the voltage command computation part (25) corrects the signals from the current sensors (26a, 26b) in accordance with the rotation speed or the load.
Inventors:
KAMIYA SHOTA (JP)
HATAKEYAMA KAZUNORI (JP)
AMANO KATSUYUKI (JP)
ITO NORIKAZU (JP)
TOMITA MASAFUMI (JP)
HATAKEYAMA KAZUNORI (JP)
AMANO KATSUYUKI (JP)
ITO NORIKAZU (JP)
TOMITA MASAFUMI (JP)
Application Number:
PCT/JP2012/075227
Publication Date:
April 03, 2014
Filing Date:
September 28, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
KAMIYA SHOTA (JP)
HATAKEYAMA KAZUNORI (JP)
AMANO KATSUYUKI (JP)
ITO NORIKAZU (JP)
TOMITA MASAFUMI (JP)
KAMIYA SHOTA (JP)
HATAKEYAMA KAZUNORI (JP)
AMANO KATSUYUKI (JP)
ITO NORIKAZU (JP)
TOMITA MASAFUMI (JP)
International Classes:
H02P27/02; F24F11/02; H02P21/00; H02P23/00; H02P27/04
Foreign References:
| JP2012170249A | 2012-09-06 | |||
| JP2009153355A | 2009-07-09 | |||
| JP2006320134A | 2006-11-24 | |||
| JPH09140198A | 1997-05-27 | |||
| JP2005110470A | 2005-04-21 | |||
| JP4357967B2 | 2009-11-04 | |||
| JP2005204431A | 2005-07-28 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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