Interior Permanent Magnet Integrated Starter Alternator

Purpose – The purpose of the paper is to present a complete design example of an interior permanent magnet integrated starter-alternator (ISA). Design/methodology/approach – After a preliminary design on the basis of an analytical model, finite element simulations are adopted to refine the design of the machine. Findings – The designed ISA drive is able to satisfy all the requirements of modern cars, where the power of the electrical generators is increasing to deliver the on-board power demand. The drive exhibits high torque, driving start, and a wide constant power speed range driving generation. Originality/value – The entire system design is considered in the paper, both the electrical machine and the control strategy.