Hybrid Electric Vehicles aims to help a new generation of engineers to master the principles of and further advance hybrid vehicle technology. It discusses hybrid vehicles, which include purely electric, hybrid electric, hybrid hydraulic, fuel cell vehicles, plug-in hybrid electric, and also off-road hybrid vehicular systems. The book focuses on the power and propulsion systems for these vehicles, including issues related to power and energy management. Topics covered include hybrid vs. pure electric, HEV system architecture (including plug-in & charging control and hydraulic), off-road and other industrial utility vehicles, safety and EMC, storage technologies, vehicular power and energy management, diagnostics and prognostics and electromechanical vibration issues. It avoids addressing in detail topics already available in other HEV related books, but concentrates on material that is not readily available elsewhere, such as design examples for hybrid vehicles, in order to enhance understanding of the principles of the new hybrid vehicle technology. It also covers new developments in the field including electronic CVT, plug-in hybrid, and new power converters and controls.