Title:
MOTOR DRIVE DEVICE AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/162106
Kind Code:
A1
Abstract:
A motor drive device (10) includes a rectifying unit (3) that rectifies a first AC power supplied from a commercial power supply (1); an inverter (5) that generates a second AC power which is outputted to a motor (32); and a control unit (6) that controls the operation of the inverter (5) so that a ripple corresponding to the power state of a capacitor (4a) is superimposed on a drive pattern of the motor (32), and that suppresses the charge/discharge current of the capacitor (4a). The control unit (6) performs, with priority, constant current load control for controlling a rotation speed of the motor (32) and, also, load ripple compensation control for compensating a load ripple, power supply ripple compensation control for suppressing the charge/discharge current (I3) of the capacitor (4a), and overload compensation control for suppressing inverter input current (I2) to be input into the inverter (5).
Inventors:
NORIMATSU YASUHARU (JP)
TAKAHARA TAKAAKI (JP)
TOYODOME SHINYA (JP)
TAKAHARA TAKAAKI (JP)
TOYODOME SHINYA (JP)
Application Number:
PCT/JP2022/007717
Publication Date:
August 31, 2023
Filing Date:
February 24, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P29/62
Foreign References:
| JP2009232591A | 2009-10-08 | |||
| JP2016073191A | 2016-05-09 | |||
| JP2012151963A | 2012-08-09 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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