Basic Characteristics of Transverse-Flux-Type Switched Reluctance Motor with Permanent Magnets Applying Reverse Bias Magnetic Field

Abstract

  Switched reluctance motors (SRMs), which consist of only iron cores and windings, are attracting attention as simple, robust, and inexpensive variable-speed motors. This paper presents a novel transverse-flux-type switched reluctance motor (TFSRM), that has permanent magnets in the rotor cores for applying a reverse bias magnetic field. The proposed TFSRM can expand the operating point from the 1st quadrant into the 3rd quadrant on B-H characteristic by the reverse bias magnetic field, which increases both torque and efficiency. The advantages of the proposed TFSRM is proved by using a three-dimensional finite element method (3D-FEM).