Control of a combined multiphase electric drive and battery charger for electric vehicle

The high cost of Electric Vehicles (EVs), their low driving range and their long charge time limit the automotive market share. In this paper, a new concept of slow/fast low-cost on-board battery charger for EV or plug-in hybrid EV, developed by Valeo, is presented. The major innovation is that a same converter device operates in the charger and traction modes. In charger mode, the electric machine windings operate as a filter. The aim of the paper is to develop an overall control for this concept in order to achieve both operating modes (charger and traction).