A harmonic model of a 2-pulse DC motor drive operating in the continuous current mode

Author

Camacho, S.M. ; Collins, E.R., Jr.

Author_Institution

Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA

fYear

1994

fDate

10-13 Apr 1994

Firstpage

40

Lastpage

44

Abstract

A harmonic model of a DC motor drive operating in the continuous current mode fed by a single-phase source is developed. The traditional constant armature current model predicts a square wave line current which has spectral characteristics independent of operation conditions. The electrical equations of the equivalent armature circuit of the DC machine are solved. A Fourier analysis of these equations yields a harmonic model of the motor and drive. The new model is compared to the traditional model in several examples and found to differ greatly at lower values of speed and torque. The new model offers improved accuracy in predicting the harmonic line currents of the 2 pulse DC motor drive

Keywords

DC motors; Fourier analysis; equivalent circuits; harmonics; machine theory; stepping motors; variable speed drives; DC motor drive; Fourier analysis; accuracy; constant armature current model; continuous current mode; electrical equations; equivalent armature circuit; harmonic line currents; harmonic model; spectral characteristics; speed; square wave line current; torque; two-pulse; Current supplies; DC machines; DC motors; Equations; Equivalent circuits; Harmonic analysis; Predictive models; Rectifiers; USA Councils; Variable speed drives;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '94. Creative Technology Transfer - A Global Affair., Proceedings of the 1994 IEEE

Conference_Location

Miami, FL

Print_ISBN

0-7803-1797-1

Type

conf

DOI

10.1109/SECON.1994.324261

Filename

324261