A smooth co-ordination control for a hybrid autonomous power system (HAPS) with battery energy storage (BES)

Abstract

The standalone hybrid power system constitutes a synchronous generator driven by a diesel engine, renewable energy source (wind) apart from a battery energy storage system. A coherent control strategy to regulate the voltage and frequency of the standalone grid is proposed in this paper. The system is simulated using Matlab/Simulink for preliminary validation and further tested on a laboratory prototype which involves a TMS320LF2407A DSP controller to digitally implement the control strategy. The dynamic behavior of the system is perused through the direct connection of an induction machine. The control strategy is verified for step changes in load and variation in wind power.

Key words： standalone hybrid power system; battery energy storage system (BESS); power conversion

Acknowledgments

The authors wish to thank the authorities of the National Institute of Technology, Tiruchirappalli, India for all the facilities provided for carrying out the experimental and simulation work for the preparation of this paper. The authors also wish to thank NaMPET, an initiative of DIT, Govt. of India for providing fund for infrastructure development of Power Converters Research Laboratory, in which the experiments have been carried out.

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