Title:
MOTOR CONTROL DEVICE AND DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/159072
Kind Code:
A1
Abstract:
The present invention addresses the problem of reducing or minimizing a harmonic loss that occurs when an alternating-current motor is driven in an over-modulation region. The final correction signal wave is changed from zero to a synchronous correction signal when a modulation rate has reached a predetermined value equal to or greater than one, and the final amplitude is changed from a first amplitude to a fixed amplitude when the modulation rate has reached the predetermined value equal to or greater than one.
Inventors:
TAKAOKA MIDORI (JP)
TOBARI KAZUAKI (JP)
IWAJI YOSHITAKA (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
TOBARI KAZUAKI (JP)
IWAJI YOSHITAKA (JP)
ONUMA YUSAKU (JP)
SUGIMOTO TAKUYA (JP)
Application Number:
PCT/JP2017/003085
Publication Date:
September 21, 2017
Filing Date:
January 30, 2017
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H02P27/08
Foreign References:
| JP2014072936A | 2014-04-21 | |||
| JP2016005378A | 2016-01-12 | |||
| JP2015053824A | 2015-03-19 | |||
| JP2013141336A | 2013-07-18 | |||
| JP2007143316A | 2007-06-07 | |||
| JP2015053824A | 2015-03-19 |
Other References:
See also references of EP 3432467A4
Attorney, Agent or Firm:
TODA Yuji (JP)
Download PDF:
Previous Patent: GAS BARRIER FILM
Next Patent: NEGATIVE ELECTRODE FOR SECONDARY BATTERIES, SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, POWER...
Next Patent: NEGATIVE ELECTRODE FOR SECONDARY BATTERIES, SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, POWER...