Experimental Verification of Output Inductor-less Phase-Shifted Full-Bridge Converter for Capacitor Charger Application

Abstract

DC-DC power conversion can take three main forms in the sense of level conversion: buck (step-down), boost (step-up) and buck-boost (step-up/down). DC-DC power conversion from lower voltage value to a higher voltage value is called step-up application. A step-up application can be done with and without isolation. Non-isolated and isolated step-up power conversion can be achieved with different DC-DC converter topologies. In this paper, experimental verification of Output Inductor-less Phase-Shifted Full-Bridge (OIPSFB) DC/DC converter topology for constant current capacitor charging application is presented. The designed converter is able to charge an output capacitor to 700V DC. The charged capacitor can range from 1mF to 100mF. Experimental results are taken from a laboratory prototype with 24-36V DC input voltage range, maximum output power of 150W, switching frequency of 75 kHz and a digital average current mode controller. The results are for an output capacitor of 15 mF.

Keywords

• Output Inductor-less
• Phase-Shifted Full-Bridge
• Capacitor Charger
• DC-DC power conversion

References

1. [1] Forouzesh, M., Siwakoti, Y. P., Gorji, S. A., Blaabjerg, F., & Lehman, B., “Step-Up DC-DC converters: A comprehensive review of voltage-boosting techniques, topologies, and applications” IEEE Transactions on Power Electronics, 32(12), 9143-9178 (2017) https://doi.org/10.1109/TPEL.2017.2652318.
2. [2] Gautam, D. S., Musavi, F., Eberle, W.,and Dunford, W. G., "A Zero-Voltage Switching Full-Bridge DC-DC Converter With Capacitive Output Filter for Plug-In Hybrid Electric Vehicle Battery Charging" in IEEE Transactions on Power Electronics, 28(12), 5728-5735 (2013).
3. [3] Lee, W., Kim, C., Moon, G.and Han, S., "A New Phase-Shifted Full-Bridge Converter With Voltage-Doubler-Type Rectifier for High-Efficiency PDP Sustaining Power Module" in IEEE Transactions on Industrial Electronics, 55(6), 2450-2458 (2008).
4. [4] Pahlevaninezhad, M., Das, P., Drobnik, J., Jain, P. K. and Bakhshai, A., "A Novel ZVZCS Full-Bridge DC/DC Converter Used for Electric Vehicles" in IEEE Transactions on Power Electronics, 27(6), 2752-2769 (2012). [5] Cha, W., Kwon, J. and Kwon, B., "Highly Efficient Asymmetrical PWM Full-Bridge Converter for Renewable Energy Sources" in IEEE Transactions on Industrial Electronics, 63(5), 2945-2953 (2016).
5. [6] Domoto, K., Ishizuka, Y., Abe, S. and Ninomiya, T., "Output-inductor-less full-bridge converter with SiC-MOSFETs for low noise and ZVS operation," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, pp. 2422-2429 (2016).
6. [7] Bottion, A. J. B. and Barbi, I., "Full bridge zero-voltage-switching PWM dc-dc converter with output capacitive filter" 2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), Fortaleza, pp. 1-6 (2015).
7. [8] Sahaté, J.A., Vlatkovic, V., Ridley, R.B., and Lee, F.C., “High-Voltage, High-Power, ZVS, Full-Bridge PWM Converter Employing an Active Snubber”, IEE APEC, 158-1663 (1991).
8. [9] Jovanovic, M. M. and Irving, B. T., "On-the-Fly Topology-Morphing Control—Efficiency Optimization Method for LLC Resonant Converters Operating in Wide Input- and/or Output-Voltage Range" IEEE Trans. Power Electron., 31(3), 2596-2608 (2016).

9. [10] Luo, J., Wang, j., Fang, Z., & Shao, J., & Li, J., “Optimal Design of a High Efficiency LLC Resonant Converter with a Narrow Frequency Range for Voltage Regulation” Energies. 11. 1124. 10.3390/en11051124 (2018).
10. [11] Jitaru, I. D., “A 3 kW soft switching DC-DC converter” in Proc. 2000 IEEE Appl. Power Electron. Conf. Expo., 1, pp. 86–92 (2000).
11. [12] Erickson, R. W., Maksimovic, D., “Fundamentals of Power Electronics”, Kluwer Academic Publishers, 2nd Edition (2003).
12. [13] Candan, M.Y., Kavak, H., Ankaralı,M.M., “Modeling and Simulation of High Gain Output Inductor-Less Full-Bridge Capacitor Charger with 28V DC Military Bus Input and 700V DC Output”, 8th National Defence Modelling and Simulation Conference (2019).
13. [14] IXYS Corporation, “X3-Class HiPerFETTM Power MOSFET”, DS100808B (10/17) (2017).
14. [15] CREE, “C2D05120E, Silicon Carbide Schottky Diode, Zero Recovery® Rectifier”, C2D05120E Rev. B. (2013).