| 摘要 |
A doubly salient reluctance machine incorporates a field magnet means comprising both field windings 191 and permanent magnets 154 in the stator of the machine so that the field winding MMF and the permanent magnet MMF can act in parallel magnetic circuits, such that the total flux in the machine is the combination of two magnetic circuits, and a field current control means such that variation of the direct current in the field windings changes the number of magnetic poles in the machine. The stator carries armature windings 152,153,155,156 wound with a pitch corresponding to a plurality of stator teeth and arranged around the stator to make one or more electrical phases, the field magnet means, interspersed between every two stator teeth, wherein the field magnet means comprises at least one field winding and at least one permanent magnet. The armature coils of the machine can be configured into one or more armature windings and circuits are described to excite the armature coils in the most efficient manner depending on the load or application requirements of the machine. |
