Abstract
Non-inverting Buck Boost converter (NIBB) operates with both voltage-step and step-down capability due to the combination of buck, boost and transition working modes. In endogenous multimode operation of NIBB, the real-time working mode selection requires high performance control strategy applicable for the multiple working modes. In this paper, with consideration of NIBB properties at all three working modes, a linear parameter varying (LPV) system model has been first established, and a digital control design method has been proposed to attain both robust stability and fast dynamic response. Different from traditional small-signal model, the LPV system offers new insights on multimode operation of NIBB, and the influences of equivalent duty ratio definition have been first revealed. To verify the analysis, the proposed control design method is applied three equivalent duty ratio definitions. The experimental comparisons show good agreement with the analysis results.
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Acknowledgements
This work is sponsored by the National Natural Science Foundation of China under Grant 52007118, and is also sponsored by Soft Science Research Program of Shanghai City (20692110500).
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Ma, J., Zhu, M., Pan, C., Cai, X. (2022). Endogenous Multimode Operation of Non-inverting Buck Boost Converter for Wide Range Voltage Regulation. In: Hu, C., Cao, W., Zhang, P., Zhang, Z., Tang, X. (eds) Conference Proceedings of 2021 International Joint Conference on Energy, Electrical and Power Engineering. Lecture Notes in Electrical Engineering, vol 899. Springer, Singapore. https://doi.org/10.1007/978-981-19-1922-0_20
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DOI: https://doi.org/10.1007/978-981-19-1922-0_20
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