Design of Pulley Motor

This paper aims at designing a pulley motor that is co-constructed with the continuously variable transmission (CVT) system of motorcycle. The centrifugal force from the steel balls in the pulley plate forces the rotor to move outwards, weakening the flux (decreasing the overlapping area between rotor’s magnets and the stator) and increasing the rotor’s speed. The speed of pulley motor now can be changed not only by the input current but also by the displacement of the rotor.