Tutorial 4

T04. Research and Development of Permanent-Magnet Machine for Electrified Transportation

Description of the Tutorial Proposal

• To develop novel permanent-magnet machines that can improve the electromagnetic performance and reliability of electrified transportation.

• The novel topologies, precise analytical models, advanced design methods, and dedicated control methods of permanent-magnet machines for electrified transportation.

• The tutorial contents include the introduction of R&D of novel permanent-magnet machines for electrified transportation, i.e., compound structure PMSM, multi-phase fault-tolerant PMSM, variable-flux machine, a supercomputer-based electric machine design-and-optimization platform, and a multi-cloud-integrated public service platform for electric machine design and simulation.

Abstract

The tutorial aims at the research and development of permanent-magnet machines for electrified transportation. Three typical special PM machines, compound structure PMSM, multi-phase fault-tolerant PMSM, and variable-flux machine, are taken as the representatives. First, the compound structure PMSM, which can be used as E-CVT in hybrid electric vehicle (HEV), will be introduced. The novel topologies, the precise two-dimensional analytical method, the magnetic decoupling design method, and the processing and manufacturing method of the compound-structure PMSM will be presented. Besides, multi-phase fault-tolerant PMSM with strong fault-tolerant capability will be described, focusing on the new topologies, hybrid single/double-layer winding design and less-harmonic winding design, fault-tolerant control methods for both the open-circuit and short-circuit faults, and fault detection methods. Variable-flux machine, which has wide operation region and high efficiency at high-speed condition, will be next introduced. Several series/parallel topologies, nonlinear hysteresis modelling method, and high-precision magnetic circuit model, and on-line magnetization-regulation control method of the variable-flux machine will be given. Finally, the introduction of a supercomputer-based electric machine design-and-optimization platform, and a multi-cloud-integrated public service platform for electric machine design and simulation, which are jointly established by universities and companies, will be given. The realization of the multi-physical-field coupling analysis method and the multi-level comprehensive design method based on the platforms will be shown.

Biography

Speaker 1: Yi Sui received the B.Sc., M.Sc., and Ph.D. degrees in electrical engineering from the Harbin Institute of Technology, Harbin, China, in 2009, 2011, and 2016, respectively. Since 2016, he has been with the Harbin Institute of Technology, where he has been a Professor since 2022. He is the author or coauthor of more than 90 published technical papers. He is the holder of more than 50 Chinese invention patents. His current research interests include fault-tolerant permanent-magnet synchronous machines and permanent-magnet linear machines.

Speaker 2: Jingang Bai received the B.Sc. degree from Harbin University of Science and Technology, and the M.Sc. and Ph.D degrees from Harbin Institute of Technology, Harbin, China, in 2009, 2011, and 2016, respectively, all in electrical engineering. Since 2016, he has been with the Harbin Institute of Technology, where he has been a Professor since 2024. He is the author or coauthor of more than 70 published technical papers. He is the holder of 40 Chinese invention patents. His research interests include brushless compound-structure permanent-magnet synchronous machines used for hybrid electric vehicles, high power density linear machines used for the Stirling engine system, and less or no rare-earth PM machines used for electric vehicles.

Speaker 3: Mingqiao Wang received his B.Sc., and Ph.D. degrees from Harbin Institute of Technology, Harbin, China, in 2016, and 2021, respectively, all in electrical engineering. Since 2022, he has been with the Harbin Institute of Technology, where he has been an Associate Professor since 2025. He is the author or coauthor of more than 40 published refereed technical papers, and the holder of 10 Chinese invention patents. His current research interests are in variable flux machine system, and electric machine design-and-optimization platform.