Load Control of Residential Real Estate to Improve Circumstances for EV Charging

Abstract

It is well known that uncontrolled EV charging may cause high peak loads and overloading. However, limiting the EV charging power may also reduce the total energy, which can be charged into the EV in a certain time period. This might raise concerns especially among full electric vehicle users as they cannot use traditional fuels e.g. gasoline to continue the trip after electricity runs out. In this paper, a control system which controls residential heating loads to enable higher EV charging powers without sacrificing comfort of living is introduced and discussed. Results of a real pilot system and two different simulations are presented. The results indicate that compared to the case with only EV charging current adjustment, up to around 30% more energy can be charged into the EV over a night by utilizing the presented control system.