Design methodology for a range-extended PHEV

The range-extended PHEV is typically designed to operate in an all-electric mode where the batteries are initially charged from the electric power grid. Unlike the pure EV, the vehicle´s range is not limited by the battery capacity as an engine and generator are incorporated to sustain the battery once the state of charge has dropped to a minimal level. The effectiveness of the concept in terms of fuel economy and reduced emissions is dependent upon the optimal selection of components and a control algorithm that is appropriate for a specific drive cycle. A design methodology is presented that first provides guidelines for the development of the VTS and the various trade-offs that must be considered. A rigorous procedure is then presented for the design and later validation of the configuration and control algorithm using hardware-in-the-loop (HIL).