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Negative sequence control for DC voltage balancing in three-phase cascaded H-bridge rectifiers considering DC-port failures.
- Source :
-
Journal of Power Electronics . Dec2022, Vol. 22 Issue 12, p2025-2038. 14p. - Publication Year :
- 2022
-
Abstract
- As a vital component of power electronic transformers (PET), the reliability of a cascaded H-bridge rectifier (CHBR) is essential. Therefore, in this paper, a DC-port voltage balance strategy considering DC-port failure is researched to ensure the stable operation of a CHBR. However, if the DC-port voltage balance strategy is adopted to realize the single-phase balance of a CHBR, the three-phase currents become unbalanced. This paper uses a negative sequence control (NSC) strategy that is conducive to balancing DC-port voltage to achieve three-phase current balance. For the DC-port voltage balance, the matrix generation modulation (MGM) algorithm is proposed. In addition, the DC-port voltage balance boundary is analyzed to determine the range of the DC-port voltage balance in the CHBR. A 3-module cascading topology is adopted to demonstrate the MGM algorithm and the NSC strategy. Through experiments, results show the correctness and feasibility of the proposed strategy. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HARBORS
*VOLTAGE control
*ELECTRONIC equipment
*POWER transformers
*VOLTAGE
Subjects
Details
- Language :
- English
- ISSN :
- 15982092
- Volume :
- 22
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 160400688
- Full Text :
- https://doi.org/10.1007/s43236-022-00503-0