Finite-element analysis of an electromechanical field of a BLDC motor considering speed control and mechanical flexibility

Author

Jang, G.H. ; Chang, J.H. ; Hong, D.P. ; Kim, K.S.

Author_Institution

PREM, Hanyang Univ., Seoul, South Korea

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

945

Lastpage

948

Abstract

This research presents a finite-element analysis of the electromechanical field of a BLDC motor considering speed control and mechanical flexibility. The magnetic field is analyzed by the nonlinear time-stepping finite-element method considering the switching action of the pulse width modulation (PWM) inverter. Magnetic force and torque are calculated by the Maxwell stress tensor. Mechanical motion of a rotor is determined by a time-stepping finite-element method considering the flexibility of shaft, rotor, and bearing. Both magnetic and mechanical finite-element equations are combined in the closed loop to control the speed using PWM. Simulation results are verified by the experiments, and they are in good agreement with the experimental results

Keywords

PWM invertors; angular velocity control; brushless DC motors; closed loop systems; finite element analysis; rotors; torque; BLDC motor; PWM inverter; bearing; brushless DC motor; closed loop; electromechanical field; finite-element method; magnetic field; magnetic force; magnetic torque; nonlinear time-stepping finite-element method; pulse width modulation inverter; rotor; shaft; speed control; Brushless DC motors; Finite element methods; Magnetic analysis; Magnetic fields; Magnetic modulators; Magnetic switching; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Velocity control;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996243

Filename

996243