Title:
CONTROL DEVICE OF ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2019033589
Kind Code:
A
Abstract:
To provide a control device of a rotary electric machine capable of improving estimation accuracy of rotational position information of a rotor of the rotary electric machine in position sensorless control.SOLUTION: A control device includes a processing section, a filtering section, and an estimating section. The processing section outputs a voltage value generated in an armature winding in a state where influence of the voltage value of a DC power supply is reduced from the voltage value generated in the armature winding during an ON period of each of an upper arm switch and a lower arm switch. The filtering section filters the output value of the processing section to extract a fundamental wave component of an induced voltage generated in the armature winding. The estimating section estimates rotational position information of a rotor based on the fundamental wave component extracted by the filtering section.SELECTED DRAWING: Figure 4
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Inventors:
KABEYA SATOKI
FUJII ATSUSHI
FUJII ATSUSHI
Application Number:
JP2017153142A
Publication Date:
February 28, 2019
Filing Date:
August 08, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02P6/182; H02M7/48; H02P25/22
Domestic Patent References:
| JPS54136615A | 1979-10-23 | |||
| JP2002119084A | 2002-04-19 | |||
| JP2007166695A | 2007-06-28 | |||
| JP2005341768A | 2005-12-08 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita