Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements

Pedram Asef, Ramon Bargallo, Andrew Lapthorn, Davide Tavernini, Lingyun Shao and Aldo Sorniotti
Additional contact information
Pedram Asef: Department of Engineering and Technology, University of Hertfordshire, Hatfield AL10 9AB, UK
Ramon Bargallo: Department of Electrical Engineering, Polytechnic University of Catalonia, 08019 Barcelona, Spain
Andrew Lapthorn: Department of Electrical and Computer Engineering, University of Canterbury, Christchurch CT1 1QU, New Zealand
Davide Tavernini: Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7XH, UK
Lingyun Shao: Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7XH, UK
Aldo Sorniotti: Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7XH, UK

Energies, 2021, vol. 14, issue 5, 1-22

Abstract: This study investigates the influence of the buried magnet arrangement on the efficiency and drivability performance provided by an on-board interior permanent magnet synchronous machine for a four-wheel-drive electric car with two single-speed on-board powertrains. The relevant motor characteristics, including flux-linkage, inductance, electromagnetic torque, iron loss, total loss, and efficiency, are analyzed for a set of six permanent magnet configurations suitable for the specific machine, which is controlled through maximum-torque-per-ampere and maximum-torque-per-voltage strategies. Moreover, the impact of each magnet arrangement is analyzed in connection with the energy consumption along four driving cycles, as well as the longitudinal acceleration and gradeability performance of the considered vehicle. The simulation results identify the most promising rotor solutions, and show that: (i) the appropriate selection of the rotor configuration is especially important for the driving cycles with substantial high-speed sections; (ii) the magnet arrangement has a major impact on the maximum motor torque below the base speed, and thus on the longitudinal acceleration and gradeability performance; and (iii) the configurations that excel in energy efficiency are among the worst in terms of drivability, and vice versa, i.e., at the vehicle level, the rotor arrangement selection is a trade-off between energy efficiency and longitudinal vehicle dynamics.

Keywords: AC machines; electromagnetic analysis; electric vehicles; energy consumption; longitudinal acceleration; finite element analysis; permanent magnet machines (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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