Influence of Control and Structure Parameters on the Starting Performance of a 12/8 Pole Switched Reluctance Motor

Abstract

To investigate the influence of control and structure parameters on the starting performance of a switched reluctance motor, a 12/8 pole switched reluctance motor is analyzed in this paper. The novel field-circuit coupled finite element method of switched reluctance motor is proposed in the paper. The influence of the controller on the switched reluctance motor is considered. The influence of rotor initial position angle, starting mode, starting current, and structure parameters on the starting performance of the switched reluctance motor is studied using the field-circuit coupled finite element method. The starting performance of the switched reluctance motor is obtained under the different control and structure parameters. The alternating starting mode of single- and two-phase winding can improve the starting torque of switched reluctance motor (SRM). As the stator pole arc coefficient increases, the starting torque of SRM increases. The appropriate reduction of the air gap length can improve the starting torque of SRM. Experimental results of the prototype are compared with the calculation results, which verifies the reliability of the calculation method and accuracy of the calculation results.

Variable Flux Direct Torque Control System of Switched Reluctance Motor

“…According to Kirchhoff's law, the voltage balance equation of the KTH phase is Equation (1). The U k is k-phase winding voltage, R k is k-phase winding resistance, i k is k-phase winding current, and k  is kphase winding flux [9].…”

“…The Switched Reluctance Motor (SRM) and its speed control system have been applied in general industry, electric vehicles, coal mining, and other fields in recent years because of their advantages of low cost, simple structure, high reliability, large starting torque, frequent start and stop, etc. [1]. However, due to its inherent double salient pole structure, the motor torque ripple is relatively large, which limits the application of SRM [2].…”

Comparison of the Various Controls of the Switched Reluctance Motor 12/8

“…The equivalent circuit of a phase of the SRM is composed of a resistance Rs, an inductance L(θ), and an emf e, connected in series, as shown in Fig 2. Neglecting the mutual inductance between the stator phases, the voltage applied across a phase equals the sum of the resistive voltage drop and the variation of the flux linkage [5][6][7]. This voltage is given by the following equation (1).…”

Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle

“…Nowadays, the Switched Reluctance Motor (SRM) is considered as the most appropriate candidate to drive small scale electric vehicles due to advantages such as its simple construction, wide constant power regions, and effective torque speed characteristics. The SRMs have been applied in various fields [1][2][3][4][5]. A convenient design of the SRM has a significant importance for an efficient performance of the motor.…”