Title:
PERMANENT-MAGNET MOTOR, METHOD AND APPARATUS FOR CONTROLLING PERMANENT-MAGNET MOTOR, COMPRESSOR, AND REFRIGERATOR-AIR CONDITIONER
Document Type and Number:
Japanese Patent JP3837986
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an apparatus and a method for controlling a permanent- magnet motor by which vibration in the permanent-magnet motor and noise therefrom can be suppressed, and a compressor and a refrigerator-air conditioner mounted with the permanent-magnet motor.
SOLUTION: A PWM carrier frequency switching command circuit portion 20 and an energization waveform switching command circuit portion 21 connected with a speed control circuit portion 17 are installed and thereby it is made possible to switch carrier frequency and energization waveform according to the rotational speed of the motor.
Inventors:
Kazuhiko Baba
Hitoshi Kawaguchi
Tomoaki Oikawa
Tajima Youga
Hitoshi Kawaguchi
Tomoaki Oikawa
Tajima Youga
Application Number:
JP36652099A
Publication Date:
October 25, 2006
Filing Date:
December 24, 1999
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F04B49/06; H02P6/06; F25B1/00; H02K19/10; H02K21/16; H02P6/10; (IPC1-7): H02P6/06; F04B49/06; F25B1/00; H02K19/10; H02K21/16; H02P6/10
Domestic Patent References:
| JP63310394A | ||||
| JP1255494A | ||||
| JP1136587A | ||||
| JP6141587A | ||||
| JP6038301A | ||||
| JP11275885A |
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka