Nonlinear Dynamic Modeling of a Single-Phase Permanent-Magnet Brushless DC Motor Using 2-D Static Finite-Element Results

Author

Fazil, Mohammed ; Rajagopal, K.R.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi, India

Volume

47

Issue

4

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

781

Lastpage

786

Abstract

A nonlinear dynamic model is proposed for a single-phase permanent-magnet brushless DC (SP PM BLDC) motor to reduce simulation time compared to transient finite-element model and finite-element co-simulation model. The model uses a lookup table of EMF constant and cogging torque obtained from two-dimensional static finite-element analyses. A machine model based on a lookup table is coupled to an inverter model and a load model to form a complete motor model. Nonlinear effects such as cogging torque, magnetic saturation, armature reaction, and switching transients are considered in the model. The simulated results are validated experimentally with a prototype SP PM BLDC external rotor ceiling fan motor.

Keywords

brushless DC motors; finite element analysis; permanent magnet motors; torque; 2D static finite element results; EMF constant; SP PM BLDC motor; armature reaction; cogging torque; external rotor ceiling fan motor; finite element cosimulation model; inverter model; lookup table; machine model; magnetic saturation; nonlinear dynamic modeling; single-phase permanent magnet brushless DC motor; switching transients; transient finite element model; two-dimensional static finite-element analyses; Brushless DC motors; Coils; Load modeling; Mathematical model; Torque; Armature reaction; Halbach magnets; cogging torque; external rotor motor; finite-element analysis; nonlinear dynamic model; single-phase permanent-magnet brushless DC (PM BLDC) motor;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2103955

Filename

5737880