SUPERVISORY CONTROL ON MICRO-GRID COMPRISING OF PV FARM AND HYBRID ENERGY STORAGE SYSTEM
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University of North Carolina at Charlotte
ANIKET MOHAN JOSHI. Supervisory control on Micro-grid comprising of PV Farm and Hybrid Energy Storage System. (Under the direction of DR. SUKUMAR KAMALASADAN).Renewable Energy has gained high level of attraction as people have understood its significance in the world and the potential it shows for being the prime source of energy of the future. Its eco-friendliness also means sustainable future of the eco-system without any sort of side-effects. These advantages also come with intermittence and reduced density of energy available to harness as far as renewables are considered. In this thesis the problem of PV energy source in terms of intermittence is taken and an approach of sustainable and dispatch-able PV farm using Hybrid Energy Storage System is proposed based on a derived power sharing algorithm. To start with the PV system, the battery and the ultra-capacitor systems are designed with dedicated controllers for each of them. Then the three sub-systems are integrated at common DC link voltage and validated with cascaded controllers to interact with each other as far as power sharing is concerned. In this process the effect of intermittence in terms of irradiance and various loading characteristics are considered as perturbation to the system and the response is recorded and used for system level validation. A similar process is carried out on the AC side in off-grid mode by using a d-q architecture based inverter. Finally a supervisory control structure is proposed, implemented and validated on the micro-inverter system in off-grid mode which enables the PV system to supply dispatch-able and sustainable power as commanded from the inverter.
BATTERYMICOR-GRIDPOWER SYSTEMSPV FARMSUPERVISORY CONTROLULTRA-CAPACITOR
Cecchi, ValentinaKakad, Yogendra
Thesis (M.S.)--University of North Carolina at Charlotte, 2016.
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