Design and Implementation of 2.5kW IBFB-LLC DC/ DC Converter Using SiC Mosfet
Main Article Content
Abstract
Interleaved Boost Full Bridge integrated LLC resonant (IBFB- LLC) is an isolated DC/DC converter with directional power flow, which can cope with a wide input voltage range of PV applications. The main losses of the converter are switching losses of the power switches and transformers losses. This paper proposes a method to improve the efficiency of the IBFB converter due to zero voltage switching technique, in combination with employing new SiC MOSFET technology instead of the conventional Si MOSFET. In addition, Litz wire is also adopted to reduce the losses on the high frequency isolation transformer. Both numerical simulations and experiments with a prototype 2.5kW converter are implemented to verify the feasibility and effectiveness of the proposed solution.
Keywords
IBFB-LLC resonant, ZVS, SiC Mosfet
Article Details
References
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[12] T. Guillod, J. Huber, F. Krismer and J. W. Kolar, Litz wire losses: Effects of twisting imperfections, 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, 2017, pp.1-8
[2] M. A. Moonem and H. Krishnaswami, Analysis of dual active bridge based power electronic transformer as a three-phase inverter, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, Montreal, QC, 2012, pp. 238-243.
[3] X. Sun, Y. Shen, W. Li and H. Wu, A PWM and PFM Hybrid Modulated Three-Port Converter for a Standalone PV/Battery Power System, in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 4, pp. 984-1000, Dec. 2015.
[4] M. C. Mira, Z. Zhang, A. Knott and M. A. E. Andersen, Analysis, Design, Modeling, and Control of an Interleaved-Boost Full-Bridge Three-Port Converter for Hybrid Renewable Energy Systems, in IEEE Transactions on Power Electronics, vol. 32, no. 2, pp. 1138-1155, Feb. 2017.
[5] Ke Jin and Xinbo Ruan, Hybrid Full-Bridge Three-Level LLC Resonant Converter- A Novel DC-DC Converter Suitable for Fuel Cell Power System, 2005 IEEE 36th Power Electronics Specialists Conference, Recife, 2005, pp. 361-367
[6] X. Sun, Y. Shen, Y. Zhu, and X. Guo, Interleaved Boost Integrated LLC Resonant Converter with Fixed-Frequency PWM Control for Renewable Energy Generation Applications, IEEE Transactions on Power Electronics, vol. 30, no. 8, pp. 4312 - 4326, 2015.
[7] B. Chen, P. Wang, Y. Wang, S. Zhang, L. Yang and F. Han, A High Efficiency 2.5 kW Bidirectional FB-CLTC Resonant DC–DC Converter with Large Voltage Ratio, 2018 1st Workshop on Wide Bandgap Power Devices and Applications in Asia (WiPDA Asia), Xi'an, China, 2018, pp. 256-265.
[8] M. G. H. Aghdam and T. Thiringer, Comparison of SiC and Si power semiconductor devices to be used in 2.5 kW DC/DC converter, 2009 International Conference on Power Electronics and Drive Systems (PEDS), Taipei, 2009, pp. 1035-1040.
[9] M. Nawaz and K. Ilves, Replacing Si to SiC: Opportunities and challenges, 2016 46th European Solid-State Device Research Conference (ESSDERC), Lausanne, 2016, pp. 472-47
[10] C. R. Sullivan and R. Y. Zhang, Simplified design method for litz wire, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, 2014, pp. 2667-2674
[11] B. A. Reese and C. R. Sullivan, Litz wire in the MHz range: Modeling and improved designs, 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, 2017, pp. 1-8.
[12] T. Guillod, J. Huber, F. Krismer and J. W. Kolar, Litz wire losses: Effects of twisting imperfections, 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, 2017, pp.1-8