Title:
MOTOR DRIVE DEVICE AND REFRIGERATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/085066
Kind Code:
A1
Abstract:
In the present invention, a start-up torque and a rotation start position of a brushless DC motor (5) are determined such that vibration when operation of a compressor (17) is started and vibration due to a decrease in load torque cancel each other out. As a result of this configuration, a motor drive device (30) can suppress vibrations generated by the compressor (17) because a vibration amplitude peak generated when the operation is started and a vibration amplitude peak generated by a sudden acceleration due to the decrease in load torque are lower than when either vibration amplitude peak occurs alone. The present invention thereby provides a motor drive device (30) capable of stable start-up while suppressing vibrations even in a compressor (17) having large variations in torque.
Inventors:
TAKEOKA YOSHINORI
HORIO YOSHIMASA
HORIO YOSHIMASA
Application Number:
PCT/JP2020/038070
Publication Date:
May 06, 2021
Filing Date:
October 08, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04B49/02; F25D11/00
Foreign References:
| JP2005214486A | 2005-08-11 | |||
| JPH01249967A | 1989-10-05 | |||
| JP2005106454A | 2005-04-21 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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