A novel on-board EV charger based on OpenWinding PMSM

摘要

A novel on-board battery charger for electric vehicle (EV) application based on open-winding permanent magnet synchronous machine is presented in this paper. The innovative charger reutilizes the currently existing components of EV drivetrain system, which has the net effect of saving cost, volume and weight. The topology integrates the conventional common dc-link converter with the windings of the machine, and the hardware reconfiguration between charger and traction modes of operation can simply be realized by installing an additional relay. To improve the level of power, the drive converter is rebuilt to be as a power factor correction (PFC) and a cascaded buck-boost converter, which functions as a single-stage power factor correction function and further satisfies the voltage range of utility grid. The simulation results demonstrate the validity of the proposed charger system.

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