Title:
INVERTER CONTROL DEVICE AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2024/075798
Kind Code:
A1
Abstract:
This inverter control device controls an inverter that converts a DC current into a three-phase AC current by driving a three-phase inverter circuit and outputs the resulting current to a motor. The inverter control device comprises: a PWM pulse generation unit that performs pulse-width modulation on a three-phase voltage command by using a carrier wave, which periodically changes, to generate a PWM pulse signal for controlling the drive for the three-phase inverter circuit; and a target harmonic current calculation unit that calculates, according to a drive condition of the motor, a target harmonic current for reducing stator loss and rotor loss respectively occurring at a stator and at a rotor of the motor due to harmonic current flowing through the motor in response to the PWM pulse signal. The PWM pulse generation unit generates, on the basis of the target harmonic current, the PWM pulse signal such that a zero-phase voltage, which is the sum of the three-phase output voltage from the three-phase inverter circuit, becomes a non-zero voltage.
Inventors:
AJIMA TOSHIYUKI (JP)
HORI MASAHIRO (JP)
HARA TAKAFUMI (JP)
TANIGUCHI SHUN (JP)
MATSUMURA TETSUO (JP)
HORI MASAHIRO (JP)
HARA TAKAFUMI (JP)
TANIGUCHI SHUN (JP)
MATSUMURA TETSUO (JP)
Application Number:
PCT/JP2023/036291
Publication Date:
April 11, 2024
Filing Date:
October 04, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02M7/48; H02P27/08
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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