Title:
INVERTER CONTROL DEVICE, MOTOR DRIVING DEVICE, BLOWER, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2024/023920
Kind Code:
A1
Abstract:
An inverter control device (26) comprises: a dq conversion unit (8) that converts three-phase motor current flowing to a fan motor (31) into d-axis current and q-axis current; a dq conversion unit (9) that converts three-phase inverter output voltage output by an inverter (27) into d-axis voltage and q-axis voltage on dq-axis coordinates; a current phase computation unit (10) that computes, on the basis of the d-axis current and the q-axis current, a current phase that is an electric angle phase of the motor current on the dq-axis coordinates; a phase and velocity estimation unit (11) that computes, on the basis of the d-axis voltage and the q-axis voltage as well as the d-axis current and the q-axis current, a motor phase that is an electric angle phase of a rotation angle of the fan motor (31); and a voltage error compensation table data unit (12) that compensates for a 6th harmonic component of a current frequency that is the frequency of the motor current.
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Inventors:
SASAKI RYOICHI (JP)
HATAKEYAMA KAZUNORI (JP)
TSUCHIYA ATSUSHI (JP)
HATAKEYAMA KAZUNORI (JP)
TSUCHIYA ATSUSHI (JP)
Application Number:
PCT/JP2022/028749
Publication Date:
February 01, 2024
Filing Date:
July 26, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/05; H02P27/06
Domestic Patent References:
| WO2021033489A1 | 2021-02-25 |
Foreign References:
| JP2005057935A | 2005-03-03 | |||
| JP2005117876A | 2005-04-28 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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