Title:
ELECTRIC MOTOR CONTROL DEVICE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2015/083449
Kind Code:
A1
Abstract:
The control device of an electric motor has: a function for generating, based on an electric motor constant and a torque command value corresponding to a predetermined temperature, a current command value to the electric motor and executing a current control mode for controlling a voltage applied to the electric motor so that the voltage follows the current command value; and another function for calculating a torque estimated value of the electric motor using the electric motor constant corresponding to the predetermined temperature and executing, based on the deviation between the calculated torque estimated value and the torque command value, a voltage phase control mode for feeding back a voltage phase. The control device of the electric motor also determines the switching of the control modes according to the magnitude relation between the current command value in the current control mode and a detected current and switches the control modes. A voltage amplitude command value during the voltage phase control mode is larger than a voltage amplitude during the current control mode in a region in which the voltage phase control mode is applied and is less than or equal to the voltage amplitude during the current control mode in a region in which the current control mode is applied.
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Inventors:
SHOUJI MITSUHIRO (JP)
NIHEI AKIKO (JP)
TAKAHASHI NAOKI (JP)
NAKAMURA HIDEO (JP)
NIHEI AKIKO (JP)
TAKAHASHI NAOKI (JP)
NAKAMURA HIDEO (JP)
Application Number:
PCT/JP2014/077558
Publication Date:
June 11, 2015
Filing Date:
October 16, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H02P21/00; H02P27/04
Foreign References:
| JP2013192399A | 2013-09-26 | |||
| JP2010268568A | 2010-11-25 | |||
| JP2008011682A | 2008-01-17 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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