Design of a Switched Reluctance Motor for a Pump Jack Application

This paper discusses the design of a switched reluctance motor (SRM) for pump jacks that are commonly used in oil extraction industry. An SRM is designed as an alternative to a 10-hp induction motor. It is designed to have the same volume so it can utilize the same NEMA frame. Optimization through the number of turns per phase, stator and rotor pole arc angles, and conduction angles is carried out. Selection of conduction angles for the motor drive is based on a multi-objective constrained genetic algorithm optimization to achieve the required torque with the same phase current as the reference induction machine. Thermal analysis of the proposed machine is conducted to demonstrate its suitability for extended continuous operation.