Title:
モータ制御装置、及びこのモータ制御装置を搭載した洗濯機または洗濯乾燥機
Document Type and Number:
Japanese Patent JP7442052
Kind Code:
B2
Abstract:
This motor control device (10) controls a brushless motor (40) having a rotor with a salient pole structure that is driven by an inverter circuit (13). The motor control device (10) comprises the inverter circuit (13), a current detection unit (21), an initial phase estimation unit (22), and a polarity identification unit (23). The initial phase estimation unit (22) estimates the initial phase of the brushless motor (40) on the basis of a current detected by the current detection unit (21). The polarity identification unit (23) superimposes voltages in the positive and negative directions of a d-axis and q-axis on the initial phase estimated by the initial phase estimation unit (22), identifies the polarity of a magnetic pole of the brushless motor (40) on the basis of the current amplitude difference in the positive and negative directions of the d-axis and q-axis detected by the current detection unit (21), and corrects the initial phase.
Inventors:
Son Hao
Akifumi Kameda
Sadashi Kamitaki
Yudai Fujioka
Yoko Kamon
Akifumi Kameda
Sadashi Kamitaki
Yudai Fujioka
Yoko Kamon
Application Number:
JP2022558948A
Publication Date:
March 04, 2024
Filing Date:
October 04, 2021
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H02P6/20; H02P6/182; H02P6/185; H02P27/06
Domestic Patent References:
| JP202065433A | ||||
| JP202031469A | ||||
| JP2014200154A |
Foreign References:
| WO2020013084A1 |
Attorney, Agent or Firm:
Kenji Kamada
Kenji Maeda
Kenji Maeda