Abstract
In order to solve the problem of large inductance reverse circulation in bi-directional buck/boost soft switching circuit (especially in light load), a bi-directional buck/boost soft switching PWM-PMF control strategy is proposed in this paper; In the existing research, there is no accurate frequency value control method, and the purpose of frequency control is fuzzy; In this study, frequency control is combined with inductor reverse circulation, and an accurate frequency calculation formula is proposed to limit inductor reverse circulation by changing the frequency value; Through PSIM simulation and actual experiment verification, it is proved that the frequency calculation method is effective, which can greatly reduce the inductance circulating current and improve the working efficiency of the circuit.
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Keling, S. et al. (2022). Research on Bi-directional Buck/Boost Soft Switching PWM-PFM Control Strategy. In: Jia, L., Qin, Y., Liang, J., Liu, Z., Diao, L., An, M. (eds) Proceedings of the 5th International Conference on Electrical Engineering and Information Technologies for Rail Transportation (EITRT) 2021. EITRT 2021. Lecture Notes in Electrical Engineering, vol 864. Springer, Singapore. https://doi.org/10.1007/978-981-16-9905-4_61
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DOI: https://doi.org/10.1007/978-981-16-9905-4_61
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