Design method for L- and T-connected tapped-winding capacitor motors

A design method for L- and T-connected tapped-winding capacitor motor is presented. This method is fundamentally based on the balanced conditions at the full load for high speed connection. Performance equations for a tapped-winding capacitor motor are derived by the method of the two-phase symmetrical component. Characteristics of the motor, obtained by the suggested design method, are discussed with regard to both its high and low speed operation. Based on the analytical results, a design procedure for a tapped-winding capacitor motor is suggested. By this procedure, auxiliary winding, extra winding, and the capacity of the capacitor for the given main winding, are easily determined. An example of design for a L-connected tapped-winding capacitor motor is described