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JACIII Vol.20 No.2 pp. 317-323
doi: 10.20965/jaciii.2016.p0317
(2016)

Paper:

Optimal Operation for Supercapacitor Storage System Using Piecewise LQR Voltage Equalization Control

Bin Chen, Zhiwu Huang, Rui Zhang, Hongtao Liao, and Jun Peng

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

Received:
November 10, 2015
Accepted:
December 10, 2015
Online released:
March 18, 2016
Published:
March 20, 2016
Keywords:
supercapacitors, voltage equalization, switched-capacitor method, PLQR algorithm
Abstract
A closed-loop piecewise linear quadratic regulation (PLQR) voltage equalization controller is proposed for a supercapacitor storage system to optimize supercapacitor operation in terms of voltage differences among supercapacitor cells with the desired voltage tracking. In this study, under constant current charging mode, a model system is built based on the switched-capacitor method. The state equation of the errortracking system is derived. By adopting an idea derived from Lyapunov elliptic domains, the PLQR algorithm is proposed to change the feedback gain dynamically to satisfy the control input constraints. Simulation results verify the effectiveness and feasibility of the proposed algorithm.
Cite this article as:
B. Chen, Z. Huang, R. Zhang, H. Liao, and J. Peng, “Optimal Operation for Supercapacitor Storage System Using Piecewise LQR Voltage Equalization Control,” J. Adv. Comput. Intell. Intell. Inform., Vol.20 No.2, pp. 317-323, 2016.
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