Design and Performance Analysis of the Surface-Mounted Permanent Magnet BLDC Hub Motor with Two Different Slot–Pole Combinations for Electric Scooter Applications
摘要
In this chapter, two 3-phase surface-mounted permanent magnet BLDC hub motor designs are proposed for an Electric Scooter with a maximum speed limit of 45kmph and loading up to two persons weighing 160kgs. One hub motor design has 48 Slots, 52 poles, and the other design has 54 Slots, 60 poles. In both the designs, stator winding slot per pole per phase is 0.3, and the size of the rotor outer diameter is the same. The current commercially available electric scooters under L1 category have gradeability limited to 50–70 only and with maximum speed of below 30 kmph. This drawback or the gap is addressed in proposed hub motor designs. The two hub motors are designed analytically by keeping the volumetric constraints within the limits, and these two designs are simulated in the Ansys RMxprt software tool. Each design with steady state, no-load, and full-load parameters obtained from the simulation results is analyzed thoroughly. The performance of the two motor designs is compared against each other. The suitability of the proposed two hub motor designs for the two-wheel Electric Scooter is discussed in detail, and the conclusions are drawn.