| Title |
A Study on the Comparison of SRMs with 3 Rotor Poles |
| Authors |
Jun-Kyung Bae ; Seok-Gyu Oh |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.5.092 |
| Keywords |
6/3 SRM ; C-core 4/3 SRM ; Flux Reversal ; Structural Characteristics ; FEM |
| Abstract |
The SRM is a doubly salient, singly excited machine. The torque is developed by the tendency for the magnetic circuit to adopt a configuration of minimum reluctance, i.e. for the rotor to move into in line with the stator poles and to maximize the inductance of the coils excited. It is common practice to combine them into groups of poles which are excited simultaneously; for example, 8/6 SRM (8 stator poles and 6 rotor poles) for 4 phases, 6/4, 12/8 SRM for 3 phases, 4/2, 6/3 SRM for 2 phases. Small number of phases in two-phase SRMs allows more cost savings with regards to the switching devices in the converter. The stator back irons of two phase 6/3 SRM and C-core 4/3 SRM does not experience any flux reversal as the flux is in the same direction whether phase A or B is excited. In this study, the similarities, the differences, and structural characteristics between the two SRMs was studied, The magnetic analysis also has been carried out by the finite element method analysis (FEM). |