Advanced Electrical Machines and Machine-Based Systems for Electric and Hybrid Vehicles

TLDR

The paper considers two system types: EV propulsion drive systems and power‑split devices used in series‑parallel hybrid architectures. The study presents advanced solutions for electric machines and machine‑based systems in EV powertrains. The authors review electric drive requirements and describe advanced machine topologies—stator‑PM, hybrid‑excitation, flux memory, redundant—alongside drive systems such as magnetic‑geared in‑wheel drives, integrated starter generators, and three power‑split implementations based on dual‑rotor PM, dual‑stator PM brushless, and magnetic‑geared dual‑rotor machines. They conclude by summarizing development trends in electric machines and machine‑based systems for EVs.

Abstract

The paper presents a number of advanced solutions on electric machines and machine-based systems for the powertrain of electric vehicles (EVs). Two types of systems are considered, namely the drive systems designated to the EV propulsion and the power split devices utilized in the popular series-parallel hybrid electric vehicle architecture. After reviewing the main requirements for the electric drive systems, the paper illustrates advanced electric machine topologies, including a stator permanent magnet (stator-PM) motor, a hybrid-excitation motor, a flux memory motor and a redundant motor structure. Then, it illustrates advanced electric drive systems, such as the magnetic-geared in-wheel drive and the integrated starter generator (ISG). Finally, three machine-based implementations of the power split devices are expounded, built up around the dual-rotor PM machine, the dual-stator PM brushless machine and the magnetic-geared dual-rotor machine. As a conclusion, the development trends in the field of electric machines and machine-based systems for EVs are summarized.