Influence of rotor pole number on torque and torque ripple when Pa = 2 for SSPM machines with 12 stator slots and non-overlapping windings.
Abstract:
This paper firstly explains how the stator slot PM (SSPM) machines have evolved from the conventional flux reversal PM machines (FRPMs), by placing the magnets over the t...Show MoreMetadata
Abstract:
This paper firstly explains how the stator slot PM (SSPM) machines have evolved from the conventional flux reversal PM machines (FRPMs), by placing the magnets over the tooth tips or between the tooth tips. The influence of tooth tips and PM configurations of five types of SSPM machines with various PM structures in stator slots, two with tooth tips and three without tooth tips, on the electromagnetic performance are then investigated and compared. It shows that, no matter what winding configurations (non-overlapping windings or overlapping windings), appropriate design of tooth tips can increase the average torque, the SSPM machines having flux focusing structures (i.e. Halbach array PM and spoke array PM) exhibit higher torque than those without flux focusing, and the SSPM machines with tooth tips have higher PM utilization rate than those without tooth tips. Non-overlapping windings can help provide higher torque density when the prototype machine length is less than around 125mm while overlapping windings are more advantageous if the machine length is over 125mm.
Influence of rotor pole number on torque and torque ripple when Pa = 2 for SSPM machines with 12 stator slots and non-overlapping windings.
Published in: IEEE Access ( Volume: 9)

Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, U.K
H. Qu was born in Anhui, China, in 1987. He received the B.Eng. degree in electrical engineering from Dalian Maritime University, Dalian, China, in 2013, and the M.Sc. degree in electrical engineering from the Harbin Institute of Technology, in 2015. He is currently pursuing the Ph. D. degree with The University of Sheffield, Sheffield, U.K. From 2015 to 2017, he worked as a Research and Development Engineer with Midea. H...Show More
H. Qu was born in Anhui, China, in 1987. He received the B.Eng. degree in electrical engineering from Dalian Maritime University, Dalian, China, in 2013, and the M.Sc. degree in electrical engineering from the Harbin Institute of Technology, in 2015. He is currently pursuing the Ph. D. degree with The University of Sheffield, Sheffield, U.K. From 2015 to 2017, he worked as a Research and Development Engineer with Midea. H...View more

Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, U.K
Z. Q. Zhu (Fellow, IEEE) received the B.Eng. and M.Sc. degrees from Zhejiang University, Hangzhou, China, in 1982 and 1984, respectively, and the Ph.D. degree from The University of Sheffield, Sheffield, U.K., in 1991, all in electrical engineering.
Since 1988, he has been with The University of Sheffield, where he has also been a Professor with the Department of Electronic and Electrical Engineering since 2000. He is curr...Show More
Z. Q. Zhu (Fellow, IEEE) received the B.Eng. and M.Sc. degrees from Zhejiang University, Hangzhou, China, in 1982 and 1984, respectively, and the Ph.D. degree from The University of Sheffield, Sheffield, U.K., in 1991, all in electrical engineering.
Since 1988, he has been with The University of Sheffield, where he has also been a Professor with the Department of Electronic and Electrical Engineering since 2000. He is curr...View more

Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, U.K
H. Qu was born in Anhui, China, in 1987. He received the B.Eng. degree in electrical engineering from Dalian Maritime University, Dalian, China, in 2013, and the M.Sc. degree in electrical engineering from the Harbin Institute of Technology, in 2015. He is currently pursuing the Ph. D. degree with The University of Sheffield, Sheffield, U.K. From 2015 to 2017, he worked as a Research and Development Engineer with Midea. His research interests include the design of flux modulation and permanent magnet machines.
H. Qu was born in Anhui, China, in 1987. He received the B.Eng. degree in electrical engineering from Dalian Maritime University, Dalian, China, in 2013, and the M.Sc. degree in electrical engineering from the Harbin Institute of Technology, in 2015. He is currently pursuing the Ph. D. degree with The University of Sheffield, Sheffield, U.K. From 2015 to 2017, he worked as a Research and Development Engineer with Midea. His research interests include the design of flux modulation and permanent magnet machines.View more

Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, U.K
Z. Q. Zhu (Fellow, IEEE) received the B.Eng. and M.Sc. degrees from Zhejiang University, Hangzhou, China, in 1982 and 1984, respectively, and the Ph.D. degree from The University of Sheffield, Sheffield, U.K., in 1991, all in electrical engineering.
Since 1988, he has been with The University of Sheffield, where he has also been a Professor with the Department of Electronic and Electrical Engineering since 2000. He is currently the Royal Academy of Engineering/Siemens Research Chair, the Head of the Electrical Machines and Drives Research Group, the Academic Director of Sheffield Siemens Gamesa Renewable Energy Research Centre, the Director of CRRC Electric Drives Technology Research Centre, and the Director of Midea Electric Machines and Controls Research Centre. His current research interests include the design and control of permanent magnet machines and drives for applications ranging from electric vehicles through domestic appliance to renewable energy. He is also a Fellow of the Royal Academy of Engineering, U.K. He was a recipient of the 2021 IEEE Nikola Tesla Award and the 2019 IEEE IAS Outstanding Achievement Award.
Z. Q. Zhu (Fellow, IEEE) received the B.Eng. and M.Sc. degrees from Zhejiang University, Hangzhou, China, in 1982 and 1984, respectively, and the Ph.D. degree from The University of Sheffield, Sheffield, U.K., in 1991, all in electrical engineering.
Since 1988, he has been with The University of Sheffield, where he has also been a Professor with the Department of Electronic and Electrical Engineering since 2000. He is currently the Royal Academy of Engineering/Siemens Research Chair, the Head of the Electrical Machines and Drives Research Group, the Academic Director of Sheffield Siemens Gamesa Renewable Energy Research Centre, the Director of CRRC Electric Drives Technology Research Centre, and the Director of Midea Electric Machines and Controls Research Centre. His current research interests include the design and control of permanent magnet machines and drives for applications ranging from electric vehicles through domestic appliance to renewable energy. He is also a Fellow of the Royal Academy of Engineering, U.K. He was a recipient of the 2021 IEEE Nikola Tesla Award and the 2019 IEEE IAS Outstanding Achievement Award.View more