A Comparison of Electromagnetic Behaviour in Classical and Mutually Coupled Switched Reluctance Generators

The paper presents a comparison of the electromagnetic characteristics of a classical Switched Reluctance Generator (SRG) to that of a new type of SRG called the mutually coupled SRG (MCSRG). ANSYS finite element 2D models for both SRGs with the same structure and working parameters but different forms of winding were created, current and torque characteristics and core loss for both types were calculated in a complete cycle of excitation, and results are compared and presented for the first time. While the average current in the mutually coupled SRG is 13.44% (2.26 A) more than classical SRG, its ripple is 1.19% less. Furthermore, the core loss of the mutually coupled SRG in a 360 electrical degree rotation is 1.38% (0.42 W) less than classical SRG's core loss. The average input torque for mutually coupled SRG is 10.51 % (0.51 N.m) less than that of classical SRG's but its ripple is 12.48% more. The results show that the advantages of winding an SRG in a mutually coupled form outweigh its disadvantages.