A Single-Unit Single-Winding Brushless Reluctance Frequency Converter

A single-unit reluctance converter is discussed. The rotor used is of a double-permeance type, and a method of optimizing its shape for any frequency ratio is attempted. In tune with the present trend, single-winding arrangements are proposed for the stator. Further extension for simultaneous double-frequency conversion makes it all the more versatile. Apart from theory and design, experimental investigations on five laboratory-size machines establish the soundness of the schemes.