Title:
ROTATING MACHINE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/026352
Kind Code:
A1
Abstract:
A control device (100) comprises: a current detector (4) for detecting stator currents flowing between a voltage applier (3) and the stator windings of a rotating machine (2); a controller (5) for calculating, on the basis of the stator currents and a stator position that is position information of the rotor (2b) of the rotating machine (2), voltage command values that are the command values of stator voltages to be applied to the stator windings; a PWM modulator (6) for controlling the on/off of switching elements provided in the voltage applier (3) so that values obtained by smoothing the stator voltages match the voltage command values; and a position estimator (7) for estimating a rotor position through a filter for removing a frequency component of the fundamental wave frequency of the rotational speed of the rotating machine (2), on the basis of the voltage command values and the stator currents.
Inventors:
TERAMOTO KOTA (JP)
KOJIMA TETSUYA (JP)
KOJIMA TETSUYA (JP)
Application Number:
PCT/JP2021/030936
Publication Date:
March 02, 2023
Filing Date:
August 24, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/18
Domestic Patent References:
| WO2012014443A1 | 2012-02-02 |
Foreign References:
| JP2017229196A | 2017-12-28 | |||
| US20140159632A1 | 2014-06-12 | |||
| US20040032231A1 | 2004-02-19 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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