Improvement Undesirable Characteristics of the Switched Reluctance Motor With Triangular Rotor Structure

Abstract

The conventional switched reluctance motors (CSRMs) confront two key challenges, including torque ripple (TR) and radial force (RF), which are the foundations of creating noise, vibration, and tension that limits the applications of the motor. In order to reduce inappropriate inherent effects of the CSRMs, optimizing via motor structure will be more comfortable and less costly than control methods. Due to its simplicity and being without coils in the rotor, this part will be a suitable candidate for improvement destinations. In this paper, a novel structure of the rotor is presented in order to reduce the TR and RF of this motor. The proposed structure is derived from the conventional one with a triangular shape in the middle of rotor, known as a Triangular Rotor Switched Reluctance Motor (TRSRM). Finding the best geometric of the proposed model fulfilled by sensitivity analysis (SA) alongside 3-D finite element analysis (3D-FEA) and the best configuration for comparison to the CSRM selected. Experimental and simulation results demonstrate that TRSRM diminishes RF and TR compared to the CRSRM while keeping the weight and volume fixed and also has a low cost and simple manufacturing. These features make the proposed structure suitable for continuous-operation applications such as air blowers in industrial devices.