An Improved Linear Switched Reluctance Motor for an Elevator Application

Abstract

This work presents finite element analysis, design, and construction of an improved linear switched reluctance motor for elevator application. In the proposed motor, both stator and translator have separate poles; thus, the motor is lighter and more appropriate for vertical motion applications. In addition, the proposed structure has low core losses due to the separate and short magnetic paths. The only set of windings is placed on stator poles while the translator has no winding or permanent magnet. In order to broaden the positive force region, non-uniform air-gap is designed and optimized via non-dominated sorting genetic algorithm. Finite element analysis and experimental tests of the motor are performed and characteristics of the proposed structure are compared with a previous structure in the elevator application. Finite element analysis have been done in ANSYS software.The results confirm that the proposed linear motor has higher average force with an acceptable ripple in force.

Keywords

• linear motor
• motor design
• switched reluctance motor