Abstract
This paper proposes a driving-scenario oriented optimal design of an axial-flux permanent-magnet (AFPM) motor for an electric vehicle. The target torque and speed (TN) curve is defined as three operation zones— constant torque, maximum direct current, and maximum voltage—based on the driving scenario. The AFPM motor is designed to minimize energy consumption based on the motor weight and the frequent operating points of a driving cycle. The final result shows that the electric vehicle driven by the proposed AFPM motor consumes about 15% less energy than motors designed using traditional methods.
Highlights
Increasing concerns about the natural environment and growing shortages of petroleum resources have driven many researchers to develop electric vehicles (EV)
Kahourzade et al [1] discussed a comprehensive design of a 10-kW axial-flux permanent-magnet (AFPM) motor for an EV direct drive based on the power and torque requirement
Lindh et al [2] designed an interior permanent-magnet synchronous motor (PMSM) for traction application to meet the requirements of torque and speed under the constraints of voltage and current using an optimization process; the resulting torque and speed (TN) curve was determined by tuning the number of turns, the torque, and the current ratio
Summary
This paper proposes a driving-scenario oriented optimal design of an axial-flux permanent-magnet (AFPM) motor for an electric vehicle. The target torque and speed (TN) curve is defined as three operation zones— constant torque, maximum direct current, and maximum voltage—based on the driving scenario. The AFPM motor is designed to minimize energy consumption based on the motor weight and the frequent operating points of a driving cycle. The final result shows that the electric vehicle driven by the proposed AFPM motor consumes about 15% less energy than motors designed using traditional methods
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