DC POWER SOURCE DEVICE, ELECTRIC MOTOR DRIVE DEVICE, AIR CONDITIONER, AND REFRIGERATOR

Title:

DC POWER SOURCE DEVICE, ELECTRIC MOTOR DRIVE DEVICE, AIR CONDITIONER, AND REFRIGERATOR

Document Type and Number:

WIPO Patent Application WO/2015/056721

Kind Code:

A1

Abstract:

This DC power source device is provided with: a switch (7) configured from a first switching element (4a) and a second switching element (4b); and a control unit (8) that controls the operation of the first switching element (4a) and the second switching element (4b). The switch (7) has a first mode, in which the on duty ratio is a first value, and a second mode, in which the on duty ratio is a second value greater than the first value. When transitioning the switch (7) from the first mode to the second mode, the control unit (8) controls the switch (7) in a manner so that the time until the on duty ratio reaches the second value is at least a certain time, and after the on duty ratio has reached the second value, controls in a manner so that the operation cycle of the switch (7) is elongates.

Inventors:

SHINOMOTO YOSUKE (JP)
HATAKEYAMA KAZUNORI (JP)
KAMIYA SHOTA (JP)

Application Number:

PCT/JP2014/077468

Publication Date:

April 23, 2015

Filing Date:

October 15, 2014

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02M3/155; H02M1/00; H02M7/5387; H02M1/36

Domestic Patent References:

WO2013057857A1

2013-04-25

Foreign References:

JPH07177742A	1995-07-14
JP2013110839A	2013-06-06
JP2008012586A	2008-01-24
JP2009050109A	2009-03-05
JP2000278955A	2000-10-06
JPH06253540A	1994-09-09
JP2007288968A	2007-11-01
JP2010213473A	2010-09-24

Other References: