Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/079540
Kind Code:
A1
Abstract:
A pulse width modulation (PWM) signal, i.e. an on-off signal for a semiconductor switch configuring a power-conversion main circuit, is generated by comparing: a modulation wave command based on an input voltage waveform command for the power-conversion main circuit; and a carrier wave in which every cycle of an AC power supply is accompanied by an integral number of changes from a lower-limit value to an upper-limit value, and from the upper-limit value to the lower-limit value, in which the change time period required for the lower-limit value to change to the upper-limit value and return to the same lower-limit value once is constant, and in which the time-period ratio of the change time period from the lower-limit value to the upper-limit value, to the change time period from the upper-limit value to the lower-limit value cyclically changes.
More Like This:
| JP2007519386 | Power converter |
| JP2017143647 | POWER CONVERTER DEVICE |
Inventors:
MATSUDA KOTARO (JP)
YAMASAKI HISANORI (JP)
YAMASAKI HISANORI (JP)
Application Number:
PCT/JP2013/082092
Publication Date:
June 04, 2015
Filing Date:
November 28, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/12; B60L9/24; H02M7/219; H02M7/797
Domestic Patent References:
| WO2008107992A1 | 2008-09-12 |
Foreign References:
| JP2010115081A | 2010-05-20 | |||
| JP2008154444A | 2008-07-03 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
Download PDF:
Previous Patent: DISPLAY DEVICE
Next Patent: TRANSPARENT LASER MARKING SHEET, LAMINATE, AND METHOD FOR LASER MARKING
Next Patent: TRANSPARENT LASER MARKING SHEET, LAMINATE, AND METHOD FOR LASER MARKING