Title:
同期電動機の制御装置
Document Type and Number:
Japanese Patent JP6707050
Kind Code:
B2
Abstract:
According to the present invention, in position sensorless control for switching between a 120-degree energization scheme for a low-speed region and a 180-degree energization scheme for a mid-to-high-speed region, stable and highly accurate speed control characteristics are provided by suppressing speed deviation Δωr in the low-speed region, and by preventing current jump-up caused by a discontinuous rotational speed occurring during switching to the mid-to-high-speed region. In the case of driving in the 120-degree energization scheme, a voltage command value is corrected such that an estimated speed value or a detected speed value follows a speed command.
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Inventors:
Hadina Agnes
Yoshinao Iwaji
Kazuaki Tohari
Yusaku Onuma
Takuya Sugimoto
Masato Oya
Yoshinao Iwaji
Kazuaki Tohari
Yusaku Onuma
Takuya Sugimoto
Masato Oya
Application Number:
JP2017060354A
Publication Date:
June 10, 2020
Filing Date:
March 27, 2017
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H02P6/182
Domestic Patent References:
| JP5972138B2 | ||||
| JP201359197A | ||||
| JP2004280563A |
Attorney, Agent or Firm:
Yuji Toda