Title:
CONTROL DEVICE AND CONTROL METHOD FOR SYNCHRONOUS ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/053944
Kind Code:
A1
Abstract:
The purpose of the invention is to obtain, in a control device for a synchronous electric motor that performs PWM drive control without performing current feedback, a configuration capable of stably driving the synchronous electric motor in all rotation speed ranges. This control device 1 comprises: a torque clamp generating unit 40 that sets a torque clamp value; a command generating unit 10 that, on the basis of a rotation speed command and said torque clamp value, generates a voltage command without performing feedback of a current passing through a motor 2; a PWM signal generating unit 20; and an inverter unit 30. In a startup range of the rotation speed of the motor 2, the torque clamp generating unit 40 sets a startup limit value as the torque clamp value, and in a range other than the startup range of the motor 2, the torque clamp generating unit sets a normal limit value as the torque clamp value. At a rotation speed in the startup range, the startup limit value is greater than the normal limit value and is greater than a torque clamp value capable of rotating the motor 2 continuously.
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Inventors:
MARUYAMA MAKOTO (JP)
Application Number:
PCT/JP2018/018447
Publication Date:
March 21, 2019
Filing Date:
May 14, 2018
Export Citation:
Assignee:
SINFONIA TECHNOLOGY CO LTD (JP)
International Classes:
H02P25/024; H02P21/06; H02P21/34; H02P27/08
Foreign References:
| JPH06197589A | 1994-07-15 | |||
| JP2014233170A | 2014-12-11 | |||
| JP2003033068A | 2003-01-31 | |||
| JP2012055032A | 2012-03-15 |
Other References:
See also references of EP 3683958A4
Attorney, Agent or Firm:
SUZUKI Kazuaki et al. (JP)
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