This book is on the electromechanical design aspects of a high-speed permanent-magnet synchronous machine integrated with a carbon fibre flywheel. The integrated machine is part of a flywheel energy storage system for use in a hybrid electric city bus. The book starts by investigating several energy storage technologies with the aim of finding the most suitable candidate for use in the energy storage system of a large hybrid electric road vehicle. High-speed composite flywheels emerge as the most suitable technology. The electrical machine design is approached analytically: a comprehensive...