NUMERICAL MODEL OF ENERGY CONTROL FOR LITHIUM-ION BATTERIES BASED ON PV SYSTEM

摘要

Renewable energy resources such as photovoltaic (PV) or wind energy are essential to endure an approaching energy crisisin the near future. However, an effective idea of control needs to be well structured in advance so that the accumulated energygenerated from these resources can be managed in an appropriate way. In this paper, a numerical model that computes an optimizedvalue of energy consumption based on weekly forecast has been performed in order to provide stable energy that is highlyuninfluenced by the fluctuating weather. A smart energy control method for Home Energy Management System (HEMS) that iscapable of increasing the energy consumption in sunny days while maintaining a minimum consistent value of energy in bad weatherconditions is proposed. The simulated system succeeded in supplying at least 10 Ah of energy to the load in most cases during therainy/cloudy days. Plus, the number of insufficient day, (NID) were reduced significantly to 0 day in most years from the year 2000to 2010 when the battery capacity was further expanded from 30 to 35 Ah.