New concept motor that uses Compound Magnet Motive Forces for EV application

This paper describes the characteristics of a new concept motor which uses combined magnet motive forces for an application of Electric Vehicles. The motor is a surface type PMSM and two kinds of magnet motive forces which are called a Compound Magnet Motive Forces (CMMF) can be used by the special magnet arrangement. By adding the current to match each of the magnet motive forces, this machine can utilize three characteristics. This new method can realize a variable characteristic. This paper shows the experimental result of the back-EMF of the CMMF, output torque under the current control, and changeable speed-torque (N-T) characteristics. The characteristics of the motor are verified by the experimental results and simulation results.