Distributed Cooperative Current-Sharing Control of Parallel Chargers Using Feedback Linearization

Jiangang Liu, Zhiwu Huang, Jing Wang, Jun Peng and Weirong Liu

Mathematical Problems in Engineering, 2014, vol. 2014, 1-12

Abstract:

We propose a distributed current-sharing scheme to address the output current imbalance problem for the parallel chargers in the energy storage type light rail vehicle system. By treating the parallel chargers as a group of agents with output information sharing through communication network, the current-sharing control problem is recast as the consensus tracking problem of multiagents. To facilitate the design, input-output feedback linearization is first applied to transform the nonidentical nonlinear charging system model into the first-order integrator. Then, a general saturation function is introduced to design the cooperative current-sharing control law which can guarantee the boundedness of the proposed control. The cooperative stability of the closed-loop system under fixed and dynamic communication topologies is rigorously proved with the aid of Lyapunov function and LaSalle invariant principle. Simulation using a multicharging test system further illustrates that the output currents of parallel chargers are balanced using the proposed control.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:636784

DOI: 10.1155/2014/636784

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