Power Management of Hybrid Energy Storage System in Traction

Tan, Louisaina Yifen (2023) Power Management of Hybrid Energy Storage System in Traction. Final Year Project (Bachelor), Tunku Abdul Rahman University of Management and Technology.

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Abstract

The power management of the hybrid energy storage system (HESS) was developed in this paper. The lithium-ion battery and ultracapacitor were composed to be the HESS. It was widely used because of its unique properties and complementary benefits. To obtain a higher power balance and improve the efficiency of trains, power management is crucial in rail applications. The optimization-based (OB) control strategy is more effective and time-efficient than the rule-based (RB) control strategy while the wavelet-based strategy is a newer strategy. Therefore, a full-active parallel HESS was constructed by using MATLAB/Simulink with a power management strategy (PMS) established, the power of the train was allocated, also the regenerative braking power was harvested and allocated successfully by the HESS. In addition, the power of the train system was improved at 82.2755%, 91.2539%, and 91.6409% with three PMSs developed that were PI control, conventional fuzzy logic control, and adaptive fuzzy logic control respectively. The fuzzy logic was successfully implemented and improved the power of the train that had been simulated in this paper. Although it has various membership functions to achieve high accuracy and more optimized solutions, the control variables are easy to learn and understand and use a user-friendly language.