Title:
POWER CONVERSION DEVICE, MOTOR DRIVE DEVICE, AND HEAT PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/238301
Kind Code:
A1
Abstract:
This power conversion device (1) comprises an inverter (310) having switching elements (311a-311f), wherein power is supplied to a motor (58) that drives a load by means of the inverter (310), and power with which the motor (58) is not rotationally driven is supplied to the motor (58) to perform constraint energization for preheating the load. The power conversion device (1) comprises: a waveform shape modification unit (340) that can modify the waveform shape of a switching waveform of at least one switching element among switching elements (311a-311f) when performing constraint energization; and a waveform shape control signal output unit (420) that sets the waveform shape of the switching waveform of the switching elements (311a-311f) during modification of the switching waveform of the switching elements (311a-311f) by the waveform shape modification unit (340), and that outputs a control signal indicating the set waveform shape.
Inventors:
MATSUO HARUKA (JP)
KUTSUKI TOMOHIRO (JP)
TAKAHARA TAKAAKI (JP)
ARISAWA KOICHI (JP)
FURUSHO YASUAKI (JP)
KOBAYASHI RYOSUKE (JP)
KUTSUKI TOMOHIRO (JP)
TAKAHARA TAKAAKI (JP)
ARISAWA KOICHI (JP)
FURUSHO YASUAKI (JP)
KOBAYASHI RYOSUKE (JP)
Application Number:
PCT/JP2022/023192
Publication Date:
December 14, 2023
Filing Date:
June 08, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M1/08; H02M7/48; H02P23/00
Foreign References:
| JP2012200042A | 2012-10-18 | |||
| JP2009027881A | 2009-02-05 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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