Assessment of electric losses minimization in commercial facilities through combined EV charging and PV generation operation

This paper investigates the opportunity for electricity loss minimization in commercial facilities where a photovoltaic system and electric vehicle charging stations coexist, through combined operation. A new metering architecture is proposed that can be used for coupling the two independent circuits and consequently reduce energy losses in grid side converters. The metering topology is valid for every kind of pricing (flat rates, feed-in tariffs, feed-in premiums). The problem is modeled as a non-linear optimization problem using BARON solver, taking into account the non-linear efficiency curve of the grid side converters. A case study with a sensitivity analysis on both photovoltaic system and electric vehicle charging fleet is carried out and useful results regarding losses minimization and profit increments are concluded.