I. Introduction
Plugin electric vehicles (PEV) are steadily gaining popularity owing to the volatility of fossil fuel prices. The electric drivetrain of a PEV includes a traction motor, its drive inverter and a battery connected to the inverter via a DC link capacitor. An additional AC/DC rectifier and a filter is needed to charge the battery from either a single or three phase source. A typical PEV electric drivetrain is shown in Fig. 1(a).