Abstract
This paper presents a circuit structure for electric vehicle battery chargers. The AC-DC stage employs boost APFC circuit which can convert 220 V AC voltage to 400 V DC voltage with very low-input THD. In order to convert 400 V DC voltage to 44–64 V, an improved phase-shift full-bridge soft switching ZVS PWM converter added by two clam** diodes and one resonant inductor is presented. All main switches of the improved converter can achieve ZVS at full load variation, and the oscillation and voltage spikes across the output rectifier diodes at the secondary side of the transformer can be significantly reduced. Thus, the charger system has high efficiency and compact structure merits. Performance of the proposed circuit is verified by experimental results for a 1.5 kW prototype.
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Yang, J., Zhang, Z., Cai, Z., Yao, Y., Li, F., Yang, W. (2020). Analysis and Implementation of High Efficiency High Power Density Battery Charger for Electric Vehicle. In: Jia, L., Qin, Y., Liu, B., Liu, Z., Diao, L., An, M. (eds) Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019. EITRT 2019. Lecture Notes in Electrical Engineering, vol 638. Springer, Singapore. https://doi.org/10.1007/978-981-15-2862-0_34
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DOI: https://doi.org/10.1007/978-981-15-2862-0_34
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