Principles and Control of Multiphase Permanent Magnet Machines

The electrification of the economy entails the development and optimization of efficient electrical machines. Permanent magnet machines use permanent magnets, rather than windings, for field excitation. They are more efficient than other electrical machine technologies for high-efficiency applications. Multiphase machines, as compared to 3-phase machines, have advantages including lower torque pulsation, higher power density, and better fault tolerance.

This book offers concise and systematic coverage of multiphase permanent magnet machines and control techniques. It gives an overview of multiphase machines and control techniques in the context of various electrical machine technologies and presents the advantages of multiphase electrical machines. Applications are covered, including wind turbine generators, electric vehicles, electric ships, and aircraft and train propulsion. Machine topologies, modelling, design, control, pulse-width modulation, fault-tolerance, and reduction of current harmonics and torque ripples are considered.

Multiphase Permanent Magnet Synchronous Machines and Drives: Principles, design, and control is written for industrial engineers and researchers, including PhD and post-doctoral research students working on electrical machines and drives, as well as for researchers working on electric vehicles, wind power generators, aerospace, electric ships and trains. Following a general introduction, chapters cover winding configurations, multiphase and dual-three-phase permanent magnet synchronous machines (PMSMs), modelling, design, modulation strategies, field-oriented control, direct torque control, model reference control, sensorless control, and also fault tolerant control for multiphase PMSMs. The logical progression from fundamental concepts to state-of-the-art research outcomes helps readers understand and use multiphase electrical machines.

Zi Qiang Zhu is a professor at the School of Electrical and Electronic Engineering of the University of Sheffield, UK. He is the founding academic director of the Sheffield Siemens Wind Power Research Centre, a fellow of the UK Royal Academy of Engineering, of the IEEE and of the IET. His research interests include the design and control of permanent magnet machines and drives for applications spanning electrified transportation (including electric vehicles, fast trains and aircraft), domestic appliances, and wind power generation. His awards include the 2019 IEEE Industry Application Society Outstanding Achievement Award, the 2021 IEEE Nikola Tesla Award, the 2024 Global Energy Prize, and 39 Best Paper Awards, and he is the author or co-author of >200 patents and >1,500 papers.

Shensheng Wang is a PhD student at the School of Electrical and Electronic Engineering of the University of Sheffield, UK. His research interests include the design and analysis of permanent magnet synchronous machines.

Bo Shao is a postdoctoral research associate at the School of Electrical and Electronic Engineering of the University of Sheffield, UK. His research interests include the control of permanent magnet machine drives.

Luocheng Yan is a PhD student at the School of Electrical and Electronic Engineering of the University of Sheffield, UK. His research interests include the control of permanent magnet synchronous machine drives.

Dawei Liang is a postdoctoral research associate at the School of Electrical and Electronic Engineering of the University of Sheffield, UK. His research interests include thermal modelling and the management of permanent magnet synchronous machines.