Title:
SWITCHING CONTROL METHOD FOR THREE-LEVEL FLYING-CAPACITOR CONVERTER
Document Type and Number:
WIPO Patent Application WO/2023/272512
Kind Code:
A1
Abstract:
The present disclosure relates to a switching control method for a three-level flying-capacitor converter. When the current input voltage of a three-level flying-capacitor converter is lower than a predetermined proportion of the maximum input voltage value, a constant high-level drive signal is sent to two middle power switches, wherein the two middle power switches are a second power switch and a third power switch, which are connected to a flying capacitor in parallel; and the high-level drive signal makes the two middle power switches switch on in a continuous manner, and makes the flying capacitor be short-circuited.
Inventors:
LIU ZEWEI (CN)
Application Number:
PCT/CN2021/103238
Publication Date:
January 05, 2023
Filing Date:
June 29, 2021
Export Citation:
Assignee:
SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)
SIEMENS LTD CHINA (CN)
International Classes:
H02M3/158; H02M1/08; H02M1/088; H02M3/24; H02M5/44
Foreign References:
| CN102624243A | 2012-08-01 | |||
| JP2014107931A | 2014-06-09 | |||
| CN103560674A | 2014-02-05 | |||
| CN106026630A | 2016-10-12 | |||
| US20170324326A1 | 2017-11-09 |
Other References:
SEBASTIAN STYNSKI: "Space Vector PWM modulator reducing switching losses for three-level flying-capacitor inverters", INDUSTRIAL ELECTRONICS (ISIE), 2010 IEEE INTERNATIONAL SYMPOSIUM ON, IEEE, PISCATAWAY, NJ, USA, 4 July 2010 (2010-07-04), Piscataway, NJ, USA , pages 3912 - 3917, XP031803241, ISBN: 978-1-4244-6390-9
WANG HAO; LI HAIJIN; YAN CHENG; XU DEHONG: "A Short-Circuit Fault-Tolerant Strategy for Three-Phase Four-Wire Flying Capacitor Three-Level Inverters", 2019 IEEE 10TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS (PEDG), IEEE, 3 June 2019 (2019-06-03), pages 781 - 786, XP033601940, DOI: 10.1109/PEDG.2019.8807759
WANG HAO; LI HAIJIN; YAN CHENG; XU DEHONG: "A Short-Circuit Fault-Tolerant Strategy for Three-Phase Four-Wire Flying Capacitor Three-Level Inverters", 2019 IEEE 10TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS (PEDG), IEEE, 3 June 2019 (2019-06-03), pages 781 - 786, XP033601940, DOI: 10.1109/PEDG.2019.8807759
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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