Title:
交流電動機の回転子位相速度推定装置
Document Type and Number:
Japanese Patent JP5720677
Kind Code:
B2
Abstract:
A rotor phase/speed estimating device includes a high-frequency voltage application unit, a high-frequency current fundamental wave component amplitude extraction unit, a correlation signal generation unit, and a rotor phase generation unit. The high-frequency voltage application unit applies a high-frequency voltage to an AC motor. The high-frequency current fundamental wave component amplitude extraction unit extracts a primary Fourier coefficient equivalent value. The correlation signal generation unit generates a correlation signal using the Fourier coefficient equivalent value. The rotor phase generation unit generates an estimated value of the rotor phase and an estimated value of a rotor speed using the correlation signal.
Inventors:
Shinnaka Shinji
Application Number:
JP2012510702A
Publication Date:
May 20, 2015
Filing Date:
April 15, 2011
Export Citation:
Assignee:
Nidec Corporation
International Classes:
H02P27/04; H02P6/06; H02P6/08; H02P6/16; H02P6/182; H02P6/28; H02P21/00; H02P21/18; H02P21/22; H02P21/24; H02P21/28; H02P23/16; H02P25/026; H02P27/08
Domestic Patent References:
| JP2008301695A | 2008-12-11 | |||
| JP2009171680A | 2009-07-30 | |||
| JP2009273254A | 2009-11-19 | |||
| JP2009273283A | 2009-11-19 |
Foreign References:
| CH283612A | 1952-06-15 | |||
| FR1392029A | 1965-03-12 | |||
| FR2166276A1 | 1973-08-17 | |||
| GB533718A | 1941-02-19 | |||
| US2151733A | 1939-03-28 |