Title:
INVERTER CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021016208
Kind Code:
A
Abstract:
To enable suppression of a ripple of AC voltage output from an inverter.SOLUTION: A motor drive device 6 comprises a control calculation unit 1 and a pulse width modulation signal output unit 12 for calculating a command voltage signal to an inverter circuit 11 both on a mountain side and a valley side of a carrier wave to output the signal to the inverter circuit 11, and a storage unit 1a for storing a command value of a command voltage signal subjected to case classification by a duty ratio of a PWM pulse signal at previous calculation timing of the command voltage signal and a duty ratio of the PWM pulse signal at current calculation timing of the command voltage signal. The control calculation unit 1 calculates the command voltage signal based on the command value stored in the storage unit 1a.SELECTED DRAWING: Figure 1
Inventors:
KURODA KIYOSHI
JIN TOMEJI
TATE YOSHIHIRO
JIN TOMEJI
TATE YOSHIHIRO
Application Number:
JP2019128087A
Publication Date:
February 12, 2021
Filing Date:
July 10, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
H02M7/48
Attorney, Agent or Firm:
Wilfort International Patent Office