Control Strategy of Hybrid Energy Storage System for a Standalone Photovoltaic System

Energy storage technologies are used with photovoltaic systems to overcome prob-lems due to varying operating conditions. This paper presents an advance control strategy for battery-supercapacitor hybrid energy storage that can be effective in dealing with the slow response of the battery. Modeling and simulation of a standalone photovoltaic system are done on MATLAB/ SIMULINK to analyze the behavior of the advance control strategy. The traditional control approach uses a low pass filter to supply slow transient power demand to the battery and fast transient power demand to the supercapacitor. But due to steady response of the battery, the power supplied by the battery does not follow the load power accurately. This con-trol approach is modified to supply the uncompensated power through the supercapacitor till the battery reaches steady state. The proposed control strategy helps in fast recovery of DC voltage during sudden power fluctuations and also enhances the battery life-span.

Keywords: Battery, Hybrid energy storage system, Photovoltaic array, Supercapacitors.

Suggested Citation: Suggested Citation

Namrata, Namrata and Rani, Pragya and Simran, Simran and Samadhiya, Akshit and Namrata, Kumari, Control Strategy of Hybrid Energy Storage System for a Standalone Photovoltaic System (April 14, 2020). Proceedings of the International Conference on Advances in Electronics, Electrical & Computational Intelligence (ICAEEC) 2019, Available at SSRN: https://ssrn.com/abstract=3575371 or http://dx.doi.org/10.2139/ssrn.3575371