Passivity-Based Control for Movable Multi-Load Inductively Coupled Power Transfer System Based on PCHD Model

Authors

Xin Li, Xiang Li

Abstract

A passivity-based control strategy for movable multi-load inductively coupled power transfer (ICPT) system based on PCHD (Port-Controlled Hamiltonian Dissipation, PCHD) model is proposed, which can effectively suppress mutual inductance and load interference. During the movement of the secondary coil of the movable multi-load ICPT system, due to the change of mutual inductance and the randomness of the multi-load, it will cause the transmission power and efficiency to oscillate and generate harmonics. Firstly, in view of the above problems, this paper analyzes the ICPT system under movable multiple loads. The DQ transformation method was used to establish the large-signal mathematical model of the system, and PCHD mathematical model in the DQ domain was established to decouple the active and reactive power. Secondly, the passivity-based controller (PBC) is designed by using the principle of interconnection and damping assignment passivity-based control (IDA-PBC). After that, the second method of Lyapunov function is used for stability analysis, and further verifies the asymptotic stability of the closed-loop system. Finally, the proposed method was verified by MATLAB/Simulink simulation. The simulation results show that the passivity-based controller has stronger robustness in both steady and movable states compared with the PI controller, which effectively suppresses the oscillation and total harmonic distortion caused by the change of mutual inductances and the randomness of the loads.

Citation

• Journal: IEEE Access
• Year: 2020
• Volume: 8
• Issue:
• Pages: 100810–100823
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• DOI: 10.1109/access.2020.2997989

BibTeX

@article{Li_2020,
  title={{Passivity-Based Control for Movable Multi-Load Inductively Coupled Power Transfer System Based on PCHD Model}},
  volume={8},
  ISSN={2169-3536},
  DOI={10.1109/access.2020.2997989},
  journal={IEEE Access},
  publisher={Institute of Electrical and Electronics Engineers (IEEE)},
  author={Li, Xin and Li, Xiang},
  year={2020},
  pages={100810--100823}
}

Download the bib file

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