• Vaibhav patel
• Deepa Karvat

For stable voltage on DC bus in DC network systems micro grid battery storage units and super capacitor unit are used to assist the main sources of renewable energy (PV array and wind). To provide good service on demand the micro grid storage system plays an important role. In this paper, there are five sources PV, wind, Battery, super capacitor and AC grid are operating in both condition grid connected or islanding condition. Boost converter are used for increase the voltage of PV, wind, super capacitor and battery units. The advantage of AC grid connection is that if hybrid storage units is not sufficient to provide voltage to a DC bus, then the AC grid will also provide a voltage to the DC bus. Firstly, DC micro grid with grid connection and variable loads are put forward. Secondly, study about its energy management and integration control system. Lastly, we focus on hybrid energy storage system (HESS). specially the HESS topology.

DC micro-grid, hybrid energy storage system (HESS), PV, wind.

"Recent Research Progress and Control Strategy on Stand-alone DC Micro-grid with Multiple-sources and Variable-loads: A Review ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.167-172, May - 2019, Available :http://www.jetir.org/papers/JETIRCQ06029.pdf

"Recent Research Progress and Control Strategy on Stand-alone DC Micro-grid with Multiple-sources and Variable-loads: A Review ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp167-172, May - 2019, Available at : http://www.jetir.org/papers/JETIRCQ06029.pdf