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Multi Converter Circuit for Battery Energy Storage Systems (BESS)


Volume 5 Issue 1 December - February 2017
Research Paper
Multi Converter Circuit for Battery Energy Storage Systems (BESS)
Ch. Venkateswara Rao*, S. S. Tulasi Ram**, B. Brahmaiah***
* Research Scholar, JNTUK, Kakinada, India.
** Professor, Department of Electrical and Electronics Engineering, JNTUH, Hyderabad, India.
*** Principal, SVEC, Tadepalligudem, India.
Rao, Ch. V., Tulasiram, S. S., and Brahmaiah, B. (2017). Multi Converter Circuit for Battery Energy Storage Systems (BESS). i-manager’s Journal on Circuits and Systems, 5(1), 11-22. https://doi.org/10.26634/jcir.5.1.13543
Abstract
Now-a-days, renewable energy sources have gained a lot of importance which reduces the greenhouse gas emission and fossil fuel pollution [19]. Renewable energy is not stable and it does not give firm output power. Power grids face a major transformation for integrating renewable energy sources for the improvement of energy efficiency and allowing consumers for more control over the consumption of their energy. Renewable energy bases such as wind-turbine and photovoltaic power generators has an impact on the stability due to the variations in their outputs because of change in weather conditions. Especially the solar energy is available in day time and not in night time. To overcome the variation of output powers from wind and solar, a proper energy storage system is required. The energy storage gains lot of importance in future power supply due to increased renewable sources [5], [22]. Due to continuous demand for smart technology implementation such as batteries with renewable sources will become huge economic progress [8]. In this paper, a 25 KW BESS (Battery Energy Storage System) is considered as a countermeasure for the above mentioned contention. BESS requires bidirectional converters (AC-DC & DC-AC), here converter efficiency is to be improved for increasing the efficiency of the BESS. The performance of 25 KW converter for BESS by using novel multi inverter topology, which is estimated to be a disparate convertor topology for improving the performance and efficiency of the BESS. Finally, the results are simulated for the voltage controlled multi inverter topology at different loads, grid power, load sharing at charging, and discharging conditions are also conferred.

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