Active equalization system based on Flyback converter for the battery modules of the electric vehicle prototype of Formula Student Uniovi team
Authors: Alonso-del-Valle, Jorge (ORCID: http://orcid.org/0000-0002-0396-9496)
Abstract: Energy storage is one of the biggest problems of nowadays engineering. Its great problem lies in the energy density that the systems are able to storing, that is, how much energy they are able to store. If there is a large amount of energy to be stored, it is best to use a pack of several batteries connected to each other. However, not all batteries are created equal. Even though models are the same, not all batteries have the exactly same characteristics and some are “stronger” than others. Putting several batteries together in a pack without proper equalization ends up drastically reducing their life span.
The present paper covers the design and simulation of an equalization system for a battery pack. The main problems to be solved are the choice of the equalizer topology and the design of the control system. In addition, battery protections are designed and implemented. Simulations are done in the PSIM software. The results of this project can be applied to the design of a battery management system (BMS) and its assembly in a Formula Student electric vehicle.
Digital Object Identifier (DOI): http://dx.doi.org/10.15592/workrooms.2017.0003
Date: July 2017
Keywords: Energy storage, Battery Management System, Flyback Converter, Formula Student