Coupled analysis of brushless DC motor using finite elements method & back electromotive force detecting electrical circuits

Author

Yosub Sim ; Niguchi, Noboru ; Hirata, Kazufumi ; Cheongworl Kim

Author_Institution

Dept. of Adaptive Machine Syst., Osaka Univ., Suita, Japan

fYear

2014

fDate

2-5 Sept. 2014

Firstpage

724

Lastpage

729

Abstract

To control sensorless type Brushless DC (BLDC) motors, various back Electromotive Force (EMF) detecting methods have been widely used. In this research, a Finite Elements Method (FEM) model of an 8 pole 12 slot BLDC motor and two kinds of phase-voltage sensing back EMF detecting electrical circuits are coupled to achieve improved and more reliable analysis results. Through this coupled analysis, it becomes possible to analyze the characteristics of the motor and how the electrical circuit affects the motor at the same time. This makes it possible to design high performance embedded motor controllers in the future. An experimental evaluation of the coupled analysis results was also implemented to verify the coupled analysis.

Keywords

brushless DC motors; electric potential; finite element analysis; force measurement; force sensors; phase measurement; reliability; voltage measurement; BLDC motor; EMF detecting method; FEM; back electromotive force detecting method; brushless DC motor; coupled analysis; electrical circuit detection; embedded motor controller; finite element method; phase-voltage sensor; reliability analysis; Analytical models; Finite element analysis; Integrated circuit modeling; Motor drives; Permanent magnet motors; Sensors; Threshold voltage; Brushless motors; Circuit analysis; Coupled mode analysis; Finite element analysis; Sensorless control; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2014 International Conference on

Conference_Location

Berlin

Type

conf

DOI

10.1109/ICELMACH.2014.6960261

Filename

6960261