An Optimal Current-Sharing Control For Parallel Charging System With Supercapacitors Using Pseudospectral Method

Keywords

Current-sharing; Optimal control; RPM

Abstract

The current-sharing is a critical issue for parallel charging system with supercapacitors, which is a high-order nonlinear system with control inputs constraints. In the paper, a uniform pseudospectral real-time closed-loop optimal control framework is proposed for constrained current-sharing control to minimize the charging time based on Radau Pseudospectral Method (RPM). In the framework, the current-sharing requirements are formulated as trajectory constraints utilizing the leader-follower structure with bounded inputs. The receding horizon control principle and pseudospetral observer are developed to construct a constrained closed-loop optimal control, in which RPM is leveraged to obtain real-time optimal solutions. Simulation results verify the effectiveness of the proposed approach.

Publication Date

10-5-2018

Publication Title

Chinese Control Conference, CCC

Volume

2018-July

Number of Pages

2179-2184

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.23919/ChiCC.2018.8484258

Socpus ID

85056159831 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85056159831

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