Time-varying modeling of electric vehicle chargers

In distribution system planning, it is essential to understand the impacts that EVs and the power electronics associated with their charging units may have on power distribution networks. A deeper understanding of these matters aids utilities in the design of electrical power systems, including asset planning, an example being selection of k-type rating for distribution transformers. In this paper we present a method utilizing a VHDL-AMS environment for modeling these nonlinear, time-varying loads.