Title:
AC ELECTRIC MOTOR CONTROL DEVICE AND AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/038574
Kind Code:
A1
Abstract:
In a compressor control device (310) used as an AC electric motor control device, a torque compensation unit (314) calculates a torque compensation value that is a compensation value for a basic torque and necessary for suppressing the rotational speed ripples of an AC electric motor (111), and outputs a torque compensation command representing the calculated torque compensation value. A compensation limiting unit (315) performs limiting processing for limiting the torque compensation value and outputs a post-limiting processing torque compensation command representing a post-limiting processing torque compensation value obtained by performing the limiting processing on the torque compensation value. In the limiting processing, the compensation limiting unit (315) limits the amplitude of the torque compensation value to a predetermined upper limit value or less. A first upper limit value that is an upper limit value when a target rotational speed value belongs to a first rotational speed interval is set to less than a second upper limit value that is an upper limit value when the target rotational speed value belongs to a second rotational speed interval representing a rotational speed smaller than the first rotational speed interval.
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Inventors:
MIYAZAKI YASUYUKI (JP)
HACHIYA YOSUKE (JP)
MORI MIZUKI (JP)
HACHIYA YOSUKE (JP)
MORI MIZUKI (JP)
Application Number:
PCT/JP2022/031327
Publication Date:
February 22, 2024
Filing Date:
August 19, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/22; H02P27/06
Domestic Patent References:
| WO2013108374A1 | 2013-07-25 | |||
| WO2021059350A1 | 2021-04-01 |
Foreign References:
| JP2021136811A | 2021-09-13 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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