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1 2016

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Mathematical-information modeling of the operation of energy storages used in electric vehicles

Bednarek K., Kasprzyk L., Hłasko E.

Computer Applications in Electrical Engineering

2016

Vol. 14

485--497

The paper deals with the issues related to correctness of electric energy management – mainly in terms of the proper use of energy storages applied in mobile objects such as electric vehicles. Particular attention has been paid to mathematical models of lead-acid batteries, lithium-ion batteries and supercapacitors. While using the mathematical model of the lead-acid battery, the simulation of the process of its discharge was conducted using the MATLAB software. Characteristics of useful parameters of a model lead-acid battery obtained as a result of the conducted simulations were presented. Verification of the correctness of functioning of the created calculation model was carried by comparing the DC load characteristics of two specific batteries which were obtained as a result of conducted computer simulations, with characteristics determined on the basis of manufacturer’s data sheets received as a result of performance of physical tests. As an additional element verifying the correctness of the functioning of the simulations, the characteristics of battery discharge was determined on the basis of the result of calculations which were performed in accordance with the normative definition of electric capacity of the battery.