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Finite-control-set model predictive control for magnetically coupled wireless power transfer systems

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Abstract

Output voltage control is an important subject in magnetically coupled wireless power transfer (MC-WPT) applications. Conventional control methods for MC-WPT systems use the PI controller. However, this method suffers from three issues: time-consuming tuning work of the PI parameters, increased control complexity due to the needs of the modulator, and poor dynamic performance. To provide an attractive alternative to the PI controller, a novel output voltage regulation method based on finite-control-set model predictive control (FCS-MPC) has been proposed for a MC-WPT system. The proposed method has inherent advantages such as a very intuitive concept, no need for a modulator, and fast dynamic response. Moreover, it can achieve soft switching by constructing pulse-density-modulation-based voltage pulse sequences as the control set. The design and implementation of the proposed controller are discussed in this paper. The proposed control method has been tested on a series-series-compensated MC-WPT system, and experimental results demonstrate the effectiveness of the proposed control method in comparison with PI control methods.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China under Grant 51907015 and in part by the Fundamental Research Funds for the Central Universities (DUT19JC07).

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Authors and Affiliations

  1. School of Electrical Engineering, Dalian University of Technology, Dalian, China

    Chen Qi, Zhengying Lang, Tao Li & Xiyou Chen

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  1. Chen Qi
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  2. Zhengying Lang
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  3. Tao Li
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  4. Xiyou Chen
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Correspondence to Chen Qi.

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Qi, C., Lang, Z., Li, T. et al. Finite-control-set model predictive control for magnetically coupled wireless power transfer systems. J. Power Electron. 21, 1095–1105 (2021). https://doi.org/10.1007/s43236-021-00252-6

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  • DOI: https://doi.org/10.1007/s43236-021-00252-6

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