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Asymmetric isolated unidirectional multi-level DC-DC power converter
- Source :
- Engineering Science and Technology, an International Journal, Vol 22, Iss 3, Pp 894-898 (2019)
- Publication Year :
- 2019
- Publisher :
- Elsevier, 2019.
-
Abstract
- This paper proposes an asymmetric unidirectional isolated multi-level DC-DC power converter (AUIMLDDPC). A three-winding transformer (TWT) is used as the interface between a half-bridge inverter (HBI) and two full-bridge rectifiers (FBRs). The turn numbers for two secondary windings of TWT are not the same. Thus, it results in unequal DC output voltages of the two FBRs. A selection circuit is adopted to control the unequal DC output voltages of two FBRS to be connected in series or stand-alone, and thus, generates a non-zero two-level voltage to control the magnitude of the output DC voltage of the proposed AUIMLDDPC. An output L-C filter is applied to filter out the high frequency harmonic of the non-zero two-level voltage. The secondary windings with unequal turn numbers for TWT can reduce the voltage change of the non-zero two-level voltage. Therefore, it can reduce the L-C filter capacity. To validate the performance of the proposed AUIMLDDPC, a hardware prototype is developed. The experimental results are as expected. Keywords: Multi-level, DC-DC, Half-bridge inverter, Full-bridge rectifier
- Subjects :
- Engineering (General). Civil engineering (General)
TA1-2040
Subjects
Details
- Language :
- English
- ISSN :
- 22150986
- Volume :
- 22
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Engineering Science and Technology, an International Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.5851842ead4c447f88e9b0b982231a64
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.jestch.2019.01.017