Title :
Comparison of simulation and test results for an ac commutator-less motor drive
Author :
Das, S.Y. ; Chattopadhyay, A.K.
Author_Institution :
Indian Inst. of Technol., Kharagpur, India
Abstract :
The present paper aims at a generalised digital simulation of an AC commutatorless motor drive using a 6-pulse noncirculating current cycloconverter taking into account the possible current discontinuities in the armature and field and simulation results are compared with test results. The actual dynamic machine model of the synchronous motor in the Park reference frame has been evolved and employed including saliency and damper windings, unlike the previous papers where the motor was replaced by an EMF source behind a resistance-inductance pair. The concept of mutual resistance has been introduced to facilitate the simulation of a generalised unbalanced motor revealing the effect of current discontinuity following the opening of one or more phases. The drive is operated in both sinusoidal and trapezoidal modes and the steady state current and voltage waveforms are studied both theoretically and experimentally.
Keywords :
cycloconvertors; electric machine analysis computing; machine testing; machine theory; machine windings; synchronous motor drives; AC commutatorless motor drive; Park reference frame; computer simulation; current discontinuities; current discontinuity; damper windings; dynamic machine model; generalised unbalanced motor; mutual resistance; saliency; six-pulse noncirculating current cycloconverter; steady-state current waveform; steady-state voltage waveform; synchronous motor; test results;
Conference_Titel :
Power Electronics and Variable Speed Drives, 1996. Sixth International Conference on (Conf. Publ. No. 429)
Print_ISBN :
0-85296-665-2
DOI :
10.1049/cp:19960930
