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Modeling and optimization of the algorithm of operation of a battery management system

2021; American Institute of Physics; Volume: 2337; Linguagem: Inglês

10.1063/5.0041820

1935-0465

Dimitar Arnaudov, Krasimir Kishkin, Dimitar Penev,

Supercapacitor Materials and Fabrication

Supercapacitors as any other capacitors also have tolerance in their capacitance. That brings difficulties when charging a series connected cells because the voltage of each cell changes with different rate. This problem had a solution called voltage balancing. Nowadays the most popular is an active voltage balancing. This paper presents a modification of an algorithm for an active voltage balancing system. These algorithms are applicable to any energy storage systems, made of supercapacitor sell connected in series. The benefits of the new algorithm are mentioned. Lowering the installed power and lower torque power of the additional DC-DC converters is achieved in the proposed algorithm. The equalization algorithm is verified by software simulation in LTSpice by using the obtained equations. The calculation procedure considers limitations related to some parameters of the energy storage elements like current and voltage. Simulations results showing the operability of the algorithm are presented.