Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/189884
Kind Code:
A1
Abstract:
Provided is a control method for, when decelerating an electric motor, ensuring regenerative torque in a high speed region and reducing electric motor loss in a low speed region. In a power conversion device of the present invention, during deceleration time, a V/F characteristic is set higher in a high speed region than during powering time and the V/F characteristic is set lower in a low speed region than during the powering time, thereby providing a control method for enhancing a regeneration performance in the high speed region during deceleration time and reducing electric motor loss in the low speed region. This makes it possible to provide a power conversion device in which both improvement of regeneration ability and improvement of electric motor efficiency can be achieved.
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Inventors:
BABA SHIGEYUKI (JP)
ARAO YUSUKE (JP)
ARAO YUSUKE (JP)
Application Number:
PCT/JP2014/065173
Publication Date:
December 17, 2015
Filing Date:
June 09, 2014
Export Citation:
Assignee:
HITACHI IND EQUIPMENT SYS (JP)
International Classes:
H02P5/74
Foreign References:
| JPS63268498A | 1988-11-07 | |||
| JP2000166293A | 2000-06-16 | |||
| JP2012120409A | 2012-06-21 | |||
| JP2002233182A | 2002-08-16 | |||
| JP2002171780A | 2002-06-14 | |||
| JPH1141950A | 1999-02-12 | |||
| JP2002247870A | 2002-08-30 |
Other References:
See also references of EP 3154182A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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