Title :
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
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;
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
DOI :
10.1109/SECON.1994.324261
