Power Management of Hybrid Power Systems with Li-Fe Batteries and Supercapacitors for Mobile Robots

This paper presents an energy management strategy of a Li-Fe battery and supercapacitor hybrid power system to provide both high power density and energy density for mobile robots with fluctuating workloads. A two-phase power-optimization approach is proposed to exploit the high power density of sup...

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Bibliographic Details
Main Authors: Guohui Wang, Zhiquan Dai, Yong Guan, Pengfei Dong, Lifeng Wu
Format: Article
Language:English
Published: SAGE Publishing 2014-05-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1155/2014/270537
Description
Summary:This paper presents an energy management strategy of a Li-Fe battery and supercapacitor hybrid power system to provide both high power density and energy density for mobile robots with fluctuating workloads. A two-phase power-optimization approach is proposed to exploit the high power density of supercapacitors and the high energy density of Li-Fe batteries. With our strategy, large peak power can be provided for a short time period whenever needed, while low power can be provided for very long time. A set of experiments have been conducted. The experimental results show that our strategy can effectively improve the performance of mobile robots and extend the lifetime of batteries.
ISSN:1687-8132