The application of certain firing angle control techniques such as Negative Firing Angle Control, Extinction Angle Control, and Symmetrical Angle Control has been studied for the first time, for the operation of three-phase semi-converters. The input and output voltage and current waveforms and the expressions for the performance quantities 01' the converter, in terms of the respective control angles a, p, and y, have been analytically derived. These results have been confirmed in the simulation of the converter with these control schemes employing MATLAB software tools. The schemes were applied for the control of Self-Excited Induction Generators popularly employed in the renewable energy conversion systems. 1llusb:ative examples of such generator-converter systems, studied both theoretically and experimentally, have been presented for different types of loading patterns. that would be required in practical applications and relative merits of the schemes are discussed. To ensure compactness, reliability and flexibility as closed loop schemes, microcontroller based firing circuits have been developed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.