Abstract

This paper proposes a black box modelling strategy for a bidirectional battery charger (BBC) for Electric Vehicles (EV), either the BBC is operating in the vehicle to grid (V2G) mode or not. Due to the increasing penetration of EV, the number of battery chargers connected to the grid is also increasing, being a challenge to assess the impact of such growing number of battery chargers into the grid performance. At the same time, there is no detailed information (static and dynamic) of the commercial chargers used in EV and connected to the grid. In this approach, a behavioural black box model is proposed. The generation of the model requests for performing a number of simple tests to the BBC in order to identify the model parameters. In the paper, a detailed switching model in PSIM is used as the actual BBC. The model thoroughly tested by simulation, and compared with the results of the generated black box model and the detailed switching model used as a reference.

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