Abstract
ABSTRACT This paper deals with the operating principles, characteristics and limitations of a novel variable frequency scheme in which a line commutated thyristor bridge inverter acts in combination with a synchronous machine (commutatorless machine abbreviated as CLM) as a variable frequency source, is a preliminary investigation the operation of the proposed scheme is studied with a static R-L load and the relationship between the operation of inverter, synchronous machine and load are experimentally verified. By using the experimental data the currents, the power flow and the inverter performance characteristics are obtained. The study is also extended to include the preliminary investigation pertaining to three-phase indution motor as a dynamic load. The nature of the voltage and current waveforms of the inverter with R-L load as well as with the induction motor are also studied.
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