| 摘要 |
A switched reluctance machine having a stator or rotor lamination 100 and 102 respectively with pole arcs 106 which are wider than necessary to fulfil the starting requirement of producing torque in the required direction at every rotor angle. On this lamination, preferably the rotor lamination 100, the surface is continuously graded over the entire pole pitch 108 so that the first derivative of airgap length g with angle is continuous. This allows control of the harmonics in the torque / angle curve and enables the production of smooth torque as the rotor 102 rotates. <IMAGE> |
