JACIII Vol.21 No.3 pp. 387-396
doi: 10.20965/jaciii.2017.p0387


Generalized Potential Function-Based Cooperative Current-Sharing Control for High-Power Parallel Charging Systems

Hongtao Liao, Jun Peng, Yanhui Zhou, Zhiwu Huang, and Feng Zhou

School of Information Science and Engineering, Central South University
Changsha 410075, China

July 5, 2016
November 19, 2016
Online released:
May 19, 2017
May 20, 2017
current-sharing, cooperative control, parallel charging

In this paper, a new decentralized gradient-based cooperative control method is proposed to achieve current sharing for parallel chargers in energy storage-type light rail vehicle systems. By employing a generalized artificial potential function to characterize the interaction rule for subchargers, the current-sharing control problem is converted into an optimization problem. Based on the gradient of the potential function, a decentralized gradient cooperative control law is derived. A general saturation function is introduced in the proposed control to guarantee the boundedness of the control output. The stability of the closed-loop system under the proposed decentralized gradient control is proven with the aid of a Lyapunov function. Simulation results are provided to verify the feasibility and validity of the proposed distributed current-sharing control method.

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Last updated on May. 26, 2017