Synchronous performance of single-phase reluctance motors

An explanation of performance in terms of motor impedances is developed and validated by comparison with measurements on a commercially built motor. The explanation involves a significant extension of the scope of 2-axis theory to permit inclusion of the principal effects of both stator and rotor circuits. A full study of the effects of parameter variations on the performance is made and used in developing an improved machine. Torque pulsations occurring at synchronous speed and capacitor operation are both discussed. Simple relations are developed for both, and should be of value to designers of induction as well as reluctance machines. Stability of operation from a variable-frequency supply is shown to be relatable to that with a polyphase supply.