Torque distribution strategy for modular cascade machines used in EVs.

A modular cascade machine (MCM) system is employed as the driving system in electric vehicles (EVs). It is comprised of unit motors like series batteries, which can expand the high‐efficiency region effectively and can be regarded as a redundant system with excellent fault‐tolerance ability. In this paper, an improved rule‐based torque distribution strategy for the MCM system is developed. First, the simulation model of EVs using the MCM system is built with the ideology of reverse simulation, providing a platform for the study of the torque distribution strategy. Then, according to the power requirement of the EV, a rule‐based strategy of output torque distribution is proposed, which can improve vehicle economy and the motor's working conditions. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. [ABSTRACT FROM AUTHOR]