Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/246355
Kind Code:
A1
Abstract:
[Problem] To provide a power conversion device which can detect phase current without generating noise and without hindrance, even in situations in which motor speed is low and DC current in an inverter circuit is difficult to detect. During the ON period of switching elements 18B, 18C of an inverter circuit 28 in a specific carrier cycle, a duty correction unit 39 for correcting the duty of a PWM signal corrects the ON period of the switching elements in the specific carrier cycle to at least the minimum time Y necessary for the current detector 30 to detect the current, by moving and adding part of the ON periods of said switching elements 18B, 18C in another carrier cycle.
Inventors:
KASHIHARA TATSUKI (JP)
Application Number:
PCT/JP2020/021041
Publication Date:
December 10, 2020
Filing Date:
May 28, 2020
Export Citation:
Assignee:
SANDEN ADVANCED TECH CORPORATION (JP)
International Classes:
H02M7/48
Foreign References:
| JP2008113494A | 2008-05-15 | |||
| JP2010213407A | 2010-09-24 | |||
| JP2012125022A | 2012-06-28 | |||
| JP4788416B2 | 2011-10-05 | |||
| JPH08340691A | 1996-12-24 |
Other References:
See also references of EP 3979485A4
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