Title:
INVERTER CONTROL DEVICE, MOTOR DRIVING DEVICE, BLOWER, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2024/105859
Kind Code:
A1
Abstract:
An inverter control device (26) comprises: a dq conversion unit (8) that converts, into a d-axis current and a q-axis current, a three-phase motor current flowing to a fan motor (31); a dq conversion unit (9) that converts the inverter output voltage output by a three-phase inverter (27) into a d-axis voltage and a q-axis voltage in a dq-axis coordinate system; a UVW conversion unit (6) that converts the dq-axis voltage command value of the dq-axis coordinate system to a three-phase voltage command value of a UVW three-phase coordinate system; a phase-and-velocity estimation unit (10) 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 which is the electric angle phase of the rotation angle of the fan motor (31), and that computes an estimated mechanical angular velocity which is the estimated value of the rotational angular velocity of the fan motor (31); and a superimposition voltage generation unit (50) that, on the basis of the motor phase and the estimated mechanical angular velocity, generates a superimposition voltage to be superimposed on the dq-axis voltage command value or the three-phase voltage command value.
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Inventors:
SASAKI RYOICHI (JP)
HATAKEYAMA KAZUNORI (JP)
TSUCHIYA ATSUSHI (JP)
HATAKEYAMA KAZUNORI (JP)
TSUCHIYA ATSUSHI (JP)
Application Number:
PCT/JP2022/042747
Publication Date:
May 23, 2024
Filing Date:
November 17, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P6/10
Domestic Patent References:
| WO2017146090A1 | 2017-08-31 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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