Abstract
In order to improve the working performance and service life of the in-wheel motor for micro-electric vehicle, the outer rotor in-wheel motor of micro-electric vehicle is designed and the model is analyzed, which are based on the theory of electromagnetic field and working principle of the motor. Besides, the size of the micro-electric vehicle wheel is optimized and designed, and the length of the internal and external diameters of inner stator and outer rotor of the outer rotor in-wheel motor are designed and calculated. According to the air-gap selection principles, the parameter of air gap is designed and determined. Some important parameters are derived and calculated, such as the pole-arc coefficient, air-gap magnetic flux density, gap coefficient, and the coefficient of air-gap flux waveforms. The finite element model outer rotor of in-wheel motor is established by Ansoft Maxwell software, and the finite element mesh subdivision is carried on. Magnetic flux densities, magnetic field strength, and magnetic line of force are analyzed by dynamic simulation, and the starting characteristics and the change of torque curve are studied and analyzed. The final simulation analysis results are in good agreement with the design calculation results, which indicate that design scheme of outer rotor in-wheel motor is useful that can meet the performance requirements of outer rotor in-wheel motor for micro-electric vehicle.
Highlights
Vehicle is regarded as the most common means of traffic and transportation, which is playing an increasingly important role in people’s life and industrial production
Based on the above literature analysis, the outer rotor of in-wheel motor of micro-electric vehicle is designed under the theory of electromagnetic field and the working principle of the motor
The finite element mesh subdivision is carried on, and the magnetic flux density, magnetic field strength, and magnetic line of force are analyzed by dynamic simulation
Summary
Vehicle is regarded as the most common means of traffic and transportation, which is playing an increasingly important role in people’s life and industrial production. Based on the above literature analysis, the outer rotor of in-wheel motor of micro-electric vehicle is designed under the theory of electromagnetic field and the working principle of the motor. Based on the size of the micro-electric vehicle wheel, the key parameters of the outer rotor of in-wheel motor are designed, such as the stator, rotor, and air gap. Based on the design calculation of the in-wheel motor electromagnetic structure and the simulation analysis of the in-wheel motor electromagnetic properties, we can determine
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