Dynamic Analysis of a Novel Synchronous Reluctance Motor with a Sinusoidal Anisotropic Rotor

This paper deals with the dynamic analysis of a Novel Synchronous Reluctance Motor (NSynRM) having a sinusoidal rotor shape in the axial direction, without changing the flux-barriers design variables. Due to the non-self-starting characteristic of a Synchronous Reluctance Motor (SynRM), the motor is started by means of an industrial drive of ACS880 type. The mechanical equations that describe the NSynRM rotor dynamic model in machine variables and rotating reference frame are presented in this paper. The motor is a 4-pole, 5.5 kW with a base speed of 1500 rpm. Finite Element Analysis is utilized to study the electromagnetic parameters of interests. The practical tests are performed at three different speeds in order to analyze the dynamic responses when there is a sudden change in mechanical load characteristics. The measured results of the NSynRM are compared with those of a Standard Synchronous Reluctance Motor (SSynRM).