Abstract
Because of its environmentally friendly, highly efficient, and multifunctional, the new hybrid EMU will have a broad space for development. Hybrid EMU ESS links lithium battery and intermediate DC bus together, bidirectional energy flow, its load is nonlinear, time-varying, and other characteristics. This work establishes the equivalent small-signal model of ESS based on the Thevenin equivalent circuit model of the power lithium battery. On this basis, choose a right charge and discharge control strategy according to the complicated working condition of the hybrid EMU ESS, and the voltage and current double-closed-loop controller is designed. The simulation shows that the system controller is robust and suitable for the complex working condition application of the ESS.
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Acknowledgments
This work was supported in part by the China National Science and Technology Support Program under Grant (2013BAG21QB00) and the National Natural Science Foundation of China under Grant (U1134204).
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He, W., Jia, X., Jin, Z., Diao, L., Liu, Z. (2014). The Control Strategy Research of Hybrid EMU Energy Storage System. In: Jia, L., Liu, Z., Qin, Y., Zhao, M., Diao, L. (eds) Proceedings of the 2013 International Conference on Electrical and Information Technologies for Rail Transportation (EITRT2013)-Volume I. Lecture Notes in Electrical Engineering, vol 287. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-53778-3_20
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DOI: https://doi.org/10.1007/978-3-642-53778-3_20
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