Title:
ROTATING MACHINE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/026351
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 generating gate signals so that values obtained by smoothing the stator voltages match the voltage command values and controlling, using the gate signals, the on/off of switching elements provided in the voltage applier (3); a voltage integrator (7) for calculating, by integrating the gate signals, voltage integration values that are the integrated values of the stator voltages; and a position estimator (8) for estimating a rotor position on the basis of the voltage integration values and the stator currents.
Inventors:
TERAMOTO KOTA (JP)
KOJIMA TETSUYA (JP)
KOJIMA TETSUYA (JP)
Application Number:
PCT/JP2021/030935
Publication Date:
March 02, 2023
Filing Date:
August 24, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/06; H02P21/22; H02P27/08
Domestic Patent References:
| WO2017138404A1 | 2017-08-17 |
Foreign References:
| JP2009033963A | 2009-02-12 | |||
| JP2012013020A | 2012-01-19 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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