MOTOR DRIVE DEVICE, VACUUM CLEANER, AND HAND DRYER

Title:

MOTOR DRIVE DEVICE, VACUUM CLEANER, AND HAND DRYER

Document Type and Number:

WIPO Patent Application WO/2020/194754

Kind Code:

A1

Abstract:

This motor drive device (2) comprises: an inverter (11) in which a leg (5A) to which switching elements (51, 52) are connected in series and a leg (5B) to which switching elements (53, 54) are connected in series are connected in parallel to a battery (10) and which converts DC power supplied from the battery (10) into AC power; a shunt resistor (55) disposed in a path between the inverter (11) and the battery (10); and a control unit (25) for controlling the switching elements (51-54) such that when a dual PWM mode is used, a current flows through the shunt resistor (55) within a period between a first timing, at which one switching element of a pair of switching elements having a smaller total on-time value, among a total on-time value of the pair of switching elements (51, 54) and a total on-time value of the pair of switching elements (52, 53), is turned on and a second timing, at which the other switching element is turned on.

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Inventors:

HATAKEYAMA KAZUNORI (JP)
TAKAYAMA YUJI (JP)
MATSUO HARUKA (JP)

Application Number:

PCT/JP2019/013890

Publication Date:

October 01, 2020

Filing Date:

March 28, 2019

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02P27/08

Domestic Patent References:

WO2018138807A1	2018-08-02
WO2018047274A1	2018-03-15

Foreign References:

JP2010148301A	2010-07-01
JP2017200433A	2017-11-02

Other References: