Print Email Facebook Twitter ZVS-Optimized Constant and Variable Switching Frequency Modulation Schemes for Dual Active Bridge Converters Title ZVS-Optimized Constant and Variable Switching Frequency Modulation Schemes for Dual Active Bridge Converters Author Lyu, D. (TU Delft DC systems, Energy conversion & Storage) Straathof, C.A. (TU Delft Electrical Engineering, Mathematics and Computer Science; est floattech) Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage; University of Twente) Qin, Z. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Faculty Electrical Engineering, Mathematics and Computer Science Date 2023 Abstract This paper proposes two modulation schemes for Dual Active Bridge (DAB) converters, with the aim of maximizing Zero Voltage Switching (ZVS) operation over a wide operational range. The first is a ZVS-optimized constant frequency modulation scheme, constructed based on the boundary conditions of ZVS operation. This scheme maximizes the number of ZVS events across a broad operational range and is easy to implement. Additionally, a variable frequency modulation scheme is proposed, enabling continuous full ZVS operation for the DAB converter at full power and eliminating the loss of ZVS due to transitioning between modulation regions. This functionality extends the full ZVS range, yielding improved Electromagnetic Interference (EMI) performance and overall power efficiency. The synergy of the proposed modulation schemes is particularly well-suited for applications like off-board Electric Vehicle (EV) charging. Experimental validation, conducted on an 11-kW DAB converter prototype with an output voltage range of 250V to 950V, demonstrates the efficacy of the proposed schemes in achieving ZVS and boosting converter efficiency. Subject dual active bridgeElectric vehicle chargingEV chargingModulationPhase modulationsoft switchingStressSwitchesSwitching frequencywide voltage rangeZero voltage switchingZVS To reference this document use: http://resolver.tudelft.nl/uuid:4492455f-363b-4251-aaa2-6c2baca0cb8d DOI https://doi.org/10.1109/OJPEL.2023.3319970 ISSN 2644-1314 Source IEEE Open Journal of Power Electronics, 4, 801-816 Part of collection Institutional Repository Document type journal article Rights © 2023 D. Lyu, C.A. Straathof, Thiago B. Soeiro, Z. Qin, P. Bauer Files PDF ZVS_Optimized_Constant_an ... erters.pdf 4.79 MB Close viewer /islandora/object/uuid:4492455f-363b-4251-aaa2-6c2baca0cb8d/datastream/OBJ/view