Obviously, to achieve high efficiency of a vehicle, its mechatronic system must be designed with use of subassemblies with the highest possible power efficiency. With regard to electric motors, the highest efficiency with highest torques offer motors with permanent magnets NdFeB [1]. Electric motors with permanent magnets (PM) make it possible to simplify the motor design. The motor stator is usually similar to the stator of inductive motors whilst the rotor incorporates permanent magnets fitted according to the defined
arrangement. Three-phase synchronous motors with permanent magnets come in two popular variants: the PM synchronous motor (PMSM) and the BLDC motor. The sinusoidal PMSM motor is very similar to the trapezoidal BLDC motor, but two main differences include the shape of back-EMF and of course
the shape of the control voltage.