Abstract
Transverse flux motors (TFMs) are being investigated to be used in vehicle traction applications due to their high torque density. In this paper, a two-phase axial-gap transverse flux motor is designed for an electric scooter, proposing a novel analytical design method. First, the dimensioning equations of the motor are obtained based on the vehicle requirements, and the stationary dq model is calculated. Then, the motor is optimized using a multiobjective genetic algorithm, and finally a 3D-FEM verification is made. Both the motor structure and the design method aim to have a low complexity, in order to favor the sizing and manufacturing processes through a low computation time and simple core shapes. This approach has not yet been explored in axial-gap TFMs.
Highlights
Over the last few decades, different transverse flux motors (TFMs) have been designed and tested in order to explore their potential in vehicle traction applications [1,2,3,4,5,6,7,8,9,10,11]
In [4], the control of TFMs is studied, comparing theoretical and experimental data, and the results show that TFMs are challenging candidates for in-wheel traction of electric vehicles
The machine structure aims to combine both the torque magnification inherited of transverse flux machines and a simple design method, in order to avoid the complexity of many designs of the literature in terms of construction and modeling
Summary
Over the last few decades, different transverse flux motors (TFMs) have been designed and tested in order to explore their potential in vehicle traction applications [1,2,3,4,5,6,7,8,9,10,11]. Saturation of the TFM is easier and the torque is lower in the flux-weakening area (high speed) Another comparison is made in [9], in this case between three in-wheel motor topologies (radial flux surfacemounted permanent magnet (PM)-synchronous motor, TFM, and claw-pole machine): the TFM shows a higher torque density but low overload capability, poor power factor, and low efficiency. In [30], four prototypes of transverse flux machines are compared in terms of power density and cost: an outer rotor or double stator increase the former, whereas using rectangular PMs and poles decreases the latter. Another comparison is made in [13]. Figure 1. 3D model of the proposed transverse flux motor (TFM)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
