POWER CONVERSION DEVICE AND ELECTRIC MOTOR SYSTEM

WIPO Patent Application WO/2019/167244

A1

The power conversion device and electric motor system according to the present invention are provided with: a power supply interruption circuit for interrupting an input from a DC power supply; an inverter circuit for converting the power from the DC power supply to an AC power; and a control unit for controlling the inverter circuit and the power supply interruption circuit. In a period during which the power supply interruption circuit interrupts the input from the DC power supply to the inverter circuit, the control unit controls the inverter circuit and the power supply interruption circuit by using a first operation mode in which the switching element of a lower arm of the inverter circuit is turned on, a second operation mode in which the switching elements of an upper arm and a lower arm are simultaneously turned on, and a third operation mode in which the switching element of an upper arm is turned on, thereby achieving the reduction of switching loss without adding a resonant circuit.

JP2661965	[Title of Invention] Inverter control device
JP6719401	Power converter
WO/2014/155647	POWER GENERATION SYSTEM

ONDA KOHEI (JP)
TAKESHIMA YOSHIHIRO (JP)
KITAMURA TATSUYA (JP)
IWABUKI HIROYASU (JP)
SOTOME HIDEYUKI (JP)
MUTO TAKAYA (JP)

PCT/JP2018/007964

September 06, 2019

March 02, 2018

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MITSUBISHI ELECTRIC CORP (JP)

H02M7/48

JP2000262066A	2000-09-22
JP2015046978A	2015-03-12
JP2007053872A	2007-03-01

MURAKAMI, Kanako et al. (JP)

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