Abstract :
In this paper, an efficient and effective magnetic circuit model is developed for the analysis of a magnetless double-rotor flux switching motor. First, a magnetic circuit network for the proposed machine is built, and formulas for the calculation of the magnetic components in the circuit, including the permeances of teeth, yokes, slots, leakage permeances, and air-gap permeances, are derived. Then, by applying Kirchhoff´s current law to each node in the network, nodal analysis is used to solve the matrix equation. All the circuit variables, and hence the complete motor magnetic characteristics are being considered. When the rotor rotates, the air-gap permeances are adjusted accordingly, and the above calculations are repeated, so as to find the complete static performance of the motor. Last, the validity and the effectiveness of the proposed method are verified using both the experimental results and the simulation results obtained from the time-stepping finite-element method.
Keywords :
finite element analysis; machine insulation; magnetic circuits; magnetic flux; matrix algebra; rotors; Kirchhoff current law; air-gap permeances; leakage permeances; magnetic circuit analysis; magnetic components; magnetless double-rotor flux switching motor; matrix equation; nodal analysis; slot permeances; teeth permeances; time stepping finite element method; yoke permeances; Air gaps; Brushless motors; Magnetic circuits; Magnetic flux; Permanent magnet motors; Rotors; Stators; Double rotor; Double-rotor; finite element analysis; finite-element analysis (FEA); flux switching motor; flux switching motor (FSM); magnetic circuit analysis; magnetic circuit analysis (MCA); magnetless;
