Title:
ELECTRIC POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2017131066
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress a higher harmonic.SOLUTION: An electric power conversion device comprises a higher harmonic extraction section 201, a first arithmetic operation section, a calculation section and a second arithmetic operation section. The higher harmonic extraction section extracts a current value indicating amplitude of a higher harmonic of an inverter current. The first arithmetic operation section calculates a voltage command value suppressing a current corresponding to the amplitude of the higher harmonic for each frequency based on the current value of the higher harmonic extracted for each frequency by the higher harmonic arithmetic operation section and sums up the voltage command values. The calculation section calculates a modulation wave for use in inverter control based on a current command value with respect to an inverter in a second period and a current value of the inverter current in the second period. The second arithmetic operation section performs an operation by using the modulation wave for use in the inverter control in a first time domain in the second period and the voltage command value summed up by the first arithmetic operation section based on the higher harmonic in a first time domain in a first period corresponding to the first time domain in the second period, and outputs the modulation wave being an arithmetic operation result to the inverter.SELECTED DRAWING: Figure 2
Inventors:
KONO YUSUKE
YUKI KAZUAKI
MORISHIMA YOICHI
YUKI KAZUAKI
MORISHIMA YOICHI
Application Number:
JP2016010027A
Publication Date:
July 27, 2017
Filing Date:
January 21, 2016
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02M7/48; H02J3/01; H02J3/38
Attorney, Agent or Firm:
Sakai International Patent Office