Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/136340
Kind Code:
A1
Abstract:
[Problem] To provide a power conversion device which is capable of linear switching between pulse width modulation which has a high noise suppression effect but in which the modulation factor is limited, and pulse width modulation which has a lesser noise suppression effect but in which a high modulation factor can be achieved. [Solution] The present invention comprises: a first modulation unit 34 that performs pulse width modulation in which only odd-number voltage vectors are output in one control cycle and reduces common mode noise; a second modulation unit 35 that performs pulse width modulation in which a higher modulation factor than in the pulse width modulation by the first modulation unit 34 is achieved and which is capable of reducing common mode noise; a determination unit 45 that determines a zero-voltage output time in which to output a zero-voltage vector; and a selection unit 40 that, in an electrical angle single period, selects between the pulse width modulation by the first modulation unit and the pulse width modulation by the second modulation unit, on the basis of the zero-voltage output time determined by the determination unit.
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Inventors:
ARAKI YUSHI (JP)
KASHIHARA TATSUKI (JP)
KOBAYASHI KOJI (JP)
OHISHI KIYOSHI (JP)
YOKOKURA YUKI (JP)
KOBAYASHI YUTO (JP)
KASHIHARA TATSUKI (JP)
KOBAYASHI KOJI (JP)
OHISHI KIYOSHI (JP)
YOKOKURA YUKI (JP)
KOBAYASHI YUTO (JP)
Application Number:
PCT/JP2023/000926
Publication Date:
July 20, 2023
Filing Date:
January 16, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
NATIONAL UNIV CORPORATION NAGAOKA UNIV TY OF TECHNOLOGY (JP)
NATIONAL UNIV CORPORATION NAGAOKA UNIV TY OF TECHNOLOGY (JP)
International Classes:
H02M7/48; H02P27/06
Domestic Patent References:
| WO2005020419A1 | 2005-03-03 | |||
| WO2019180763A1 | 2019-09-26 |
Foreign References:
| US20080225561A1 | 2008-09-18 | |||
| JP2006254671A | 2006-09-21 | |||
| JP5298003B2 | 2013-09-25 |
Other References:
DABOUR SHERIF M.; ABDEL-WAHAB SAMAR M.; RASHAD ESSAM M.: "Common-Mode Voltage Reduction Algorithm with Minimum Switching Losses for Three-Phase Inverters", 2019 21ST INTERNATIONAL MIDDLE EAST POWER SYSTEMS CONFERENCE (MEPCON), IEEE, 17 December 2019 (2019-12-17), pages 1210 - 1215, XP033725659, DOI: 10.1109/MEPCON47431.2019.9008072
VAZQUEZ G.; HERNANDEZ-AVILA I.; SOSA J.M.; LIMONES-POZOS C. A.; ARAU JAIME: "A Comparative Analysis of Space-Vector PWM Techniques for Transformerless Three-Phase Voltage Source Inverters", 2018 14TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS (CIEP), IEEE, 24 October 2018 (2018-10-24), pages 183 - 187, XP033472521, DOI: 10.1109/CIEP.2018.8573322
VAZQUEZ G.; HERNANDEZ-AVILA I.; SOSA J.M.; LIMONES-POZOS C. A.; ARAU JAIME: "A Comparative Analysis of Space-Vector PWM Techniques for Transformerless Three-Phase Voltage Source Inverters", 2018 14TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS (CIEP), IEEE, 24 October 2018 (2018-10-24), pages 183 - 187, XP033472521, DOI: 10.1109/CIEP.2018.8573322
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