Title:
POWER CONVERSION DEVICE AND CONTROLLING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/082441
Kind Code:
A1
Abstract:
In acceleration and deceleration operations of a motor, a problem has been posed in that a power converter gets into overcurrent or overvoltage when an inertia moment value of a machine mounted to the motor is large. In order to solve the above problem, provided is a power conversion device that controls a DC voltage, an output frequency, and an output current of a power converter that drives the motor. The power conversion device has a frequency command correction calculation unit that automatically adjusts a frequency command, and is configured to automatically adjust the frequency command such that the power converter does not get into overvoltage or overcurrent during acceleration and deceleration operations of the motor.
Inventors:
TOBARI KAZUAKI (JP)
IWAJI YOSHITAKA (JP)
HADINATA AGNES (JP)
NAKAMURA ATSUHIKO (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
IWAJI YOSHITAKA (JP)
HADINATA AGNES (JP)
NAKAMURA ATSUHIKO (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
Application Number:
PCT/JP2018/024350
Publication Date:
May 02, 2019
Filing Date:
June 27, 2018
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H02P27/06; H02M7/48
Foreign References:
| JPH0739183A | 1995-02-07 | |||
| JP2013093957A | 2013-05-16 | |||
| JP2016163501A | 2016-09-05 | |||
| JP2002325492A | 2002-11-08 | |||
| JP2002034289A | 2002-01-31 |
Other References:
See also references of EP 3703249A4
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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