Design and Development of Capacitor Run Split-Phase Fan Motor for Higher Efficacy

Abstract

This paper presents the design and development of the permanent capacitor split phase ceiling fan motor with higher air delivery per unit power consumption. An existing ceiling fan is taken as a case study and experimental performance is validated against finite element analysis (FEA). A parametric analysis of significant parameters such as turns in both the windings, permanent capacitor connected across the auxiliary winding, air gap length, stack length and loading, is made in detail. The copper losses and the core losses are also analyzed for the parametric variations. Moreover, the efficiency of the motor is enhanced for optimum operation. Based on the study, two new motors are designed for improvement in the performance keeping the outer diameter of the motor same as the existing motor. The overall saturation of the motor is reduced by modifying the lamination design and increasing overall volume of the motor. The designed motors are analyzed using FEA and prototypes are developed. Both the prototype results show significant improvement in the power consumption as well as the air delivery with blades of existing fan.