Title:
永久磁石式同期モータおよび換気送風機
Document Type and Number:
Japanese Patent JP6929460
Kind Code:
B2
Abstract:
A permanent-magnet synchronous motor (100) includes an inverter power circuit (3) that includes a plurality of transistors (31 to 36) that are switched to convert direct-current power to three-phase alternating-current power, a motor body (20) that includes a stator (21) and a rotor and is driven by the three-phase alternating-current power, a current detector (5) that calculates an excitation current value and a torque current value from respective motor current values of two phases of the stator (21) and an estimated value of a magnetic pole position of the rotor, a magnetic pole position detector (9) that determines, for output to the current detector (5), the estimated value from the excitation current value, the torque current value, and supply voltage information, a voltage calculation unit (8) that calculates, by means of the excitation current value, the torque current value, and an angular velocity calculated from the estimated value, the supply voltage information that causes the torque current value to approximate a torque current command value, and an inverter controller that controls the inverter power circuit (3) on a basis of the supply voltage information and the estimated value.
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Inventors:
Kazuhiko Hotta
Ryota Kurosawa
Takuya Saeki
Ryota Kurosawa
Takuya Saeki
Application Number:
JP2020522462A
Publication Date:
September 01, 2021
Filing Date:
May 30, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02P27/06; H02K19/10; H02P21/18
Domestic Patent References:
| JP2010268629A | ||||
| JP2006230200A |
Foreign References:
| WO2012144456A1 |
Attorney, Agent or Firm:
Jun Takamura