Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/111695
Kind Code:
A1
Abstract:
This power conversion device has a power converter having a switching element and a control unit for controlling the power converter on the basis of the voltage information and current information of an induction motor. The control unit calculates first power information on the basis of the voltage information and current information of the induction motor, calculates second power information on the basis of an electric circuit constant of the induction motor, a current command value, an output frequency command value, and a magnetic flux estimated value, and calculates the magnetic flux estimated value so that the second power information follows the first power information.
Inventors:
TOBARI KAZUAKI (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
TOKASHIKI MUTSUO (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
TOKASHIKI MUTSUO (JP)
Application Number:
PCT/JP2020/034294
Publication Date:
June 10, 2021
Filing Date:
September 10, 2020
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H02P21/26
Foreign References:
| JPH09163782A | 1997-06-20 | |||
| JPH11151000A | 1999-06-02 | |||
| JP2019022446A | 2019-02-07 | |||
| JP2017070118A | 2017-04-06 | |||
| JP2016032364A | 2016-03-07 |
Other References:
See also references of EP 4072005A4
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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