Effective Utilization of Battery Banks In Multi-Level Inverters for a Residential Photovoltaic Applications

Uppaluri, M K (2014) Effective Utilization of Battery Banks In Multi-Level Inverters for a Residential Photovoltaic Applications. Masters thesis, Indian Institute of Technology.

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Abstract

Distributed generation is key to improve reliability, reduced emission and improve power quality. In spite of high initial cost PV is forefront in renewable energy generation. For a residential PV installed application complete utilization of battery banks is key to reduce grid dependency and improve reliability. The present work introduces a novel methodology which leads to reduce the grid dependency and improve reliability for customer by making effective use of battery banks. In order to achieve above objective it’s important to keep battery banks difference or state of charges with in a threshold limit. This objective is attained by switching/shifting isolated panels. Selection of isolated panels through optimization by considering irregularity of roof top and worst case conditions. In addition, a control strategy is developed for switching isolated panels depending on difference in discharge levels. In addition, to decrease grid reliance and improve reliability a switching pattern is developed for a household installed PV system considering generation and load pattern. The present work is verified in MATLAB/Simulink environment.

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