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http://hdl.handle.net/10397/78185
Title: | A new control method for a bi-directional phase-shift-controlled DC-DC converter with an extended load range | Authors: | Xu, W Chan, NHL Or, SW Ho, SL Chan, KW |
Issue Date: | 2017 | Source: | Energies, 2017, v. 10, no. 10, 1532 | Abstract: | Phase-shifted converters are practically important to provide high conversion efficiencies through soft-switching techniques. However, the limitation on a resonant inductor current in the converters often leads to a non-fulfillment of the requirement of minimum load current. This paper presents a new power electronics control technique to enable the dual features of bi-directional power flow and an extended load range for soft-switching in phase-shift-controlled DC-DC converters. The proposed technique utilizes two identical full bridge converters and inverters in conjunction with a new control logic for gate-driving signals to facilitate both Zero Current Switching (ZCS) and Zero Voltage Switching (ZVS) in a single phase-shift-controlled DC-DC converter. The additional ZCS is designed for light load conditions at which the minimum load current cannot be attained. The bi-directional phase-shift-controlled DC-DC converter can implement the function of synchronous rectification. Its fast dynamic response allows for quick energy recovery during the regenerative braking of traction systems in electrified trains. | Keywords: | Light load condition Load range Phase-shift-controlled converters Zero current switching Zero voltage switching |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Energies | EISSN: | 1996-1073 | DOI: | 10.3390/en10101532 | Rights: | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). The following publication Xu, W., Chan, N. H. L., Or, S. W., Ho, S. L., & Chan, K. W. (2017). A new control method for a bi-directional phase-shift-controlled DC-DC converter with an extended load range. Energies, 10(10), 1532 is available at https://dx.doi.org/10.3390/en10101532 |
Appears in Collections: | Journal/Magazine Article |
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Xu_Bi-directional_Phase-shift-controlled_DC-DC.pdf | 2.2 MB | Adobe PDF | View/Open |
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