Optimization Design and Performance Analysis of a PM Brushless Rotor Claw Pole Motor with FEM

Abstract

Abstract:A new type of permanent magnet (PM) brushless claw pole motor (CPM) with soft magnetic composite (SMC) core is designed and analyzed in this paper. The PMs are mounted on the claw pole surface, and the three-phase stator windings are fed by variable-frequency three-phase AC currents. The advantages of the proposed CPM are that the slip rings on the rotor are cast off and it can achieve the efficiency improvement and higher power density. The effects of the claw-pole structure parameters, the air-gap length, and the PM thinner parameter of the proposed CPM on the output torque are investigated by using three-dimensional time-stepping finite element method (3D TS-FEM). The optimal rotor structure of the proposed CPM is obtained by using the response surface methodology (RSM) and the particle swarm optimization (PSO) method and the comparison of full-load performances of the proposed CPM with different material cores (SMC and silicon steel) is analyzed.Keywords: PM brushless rotor claw pole motor; 3D finite element method (3D FEM); parameters optimization; response surface methodology (RSM); particle swarm optimization (PSO) method; soft magnetic composite (SMC)

Embedded Simple Excited Automotive Alternator Modeling using Magnetic Equivalent Circuits

“…Through the last years several works, [1][2][3], showed standing of claw pole structure adopted in conventional automotive alternators power generation. Due especially to its simplicity and low manufacturing costs, the claw pole alternator has the most popular electromechanical automotive source of electrical energy [4]. In reality, the hetero-polar structure of its rotor offering the integration a high pole pair number in a reduced volume, leading so to an interesting generation capabilities.…”