Determination, simulation and implementation of a novel improved industrial cycloconverter

摘要

Cycloconverter is an AC/AC converter which produces ac output voltage with desired amplitude andnfrequency. Cycloconverters are being used in important and very high power applications, such as cement,nsteel and chemistry industries. In this paper, comparing different modulation methods and types ofncycloconverters, a novel improved cycloconverter, i.e. non-circulating current cycloconverter with integralncontrol method, is determined. Despite the ordinary topology and structure of the cycloconverter, there is anserious problem for its implementation. Therefore, a new practical solution is presented here to remove thenproblem, i.e. the inherent incompatibility between integral control, as one of the best and most optimalnmodulation methods, and non-circulating current cycloconverter, as the more industrial and economical typenof cycloconverter. The new solution is cost effective and without complexity. Also, a proper practical bankncross-over method has been chosen and implemented for the novel cycloconverter. Using the presentednsolution, the non-circulating current cycloconverter with integral control method is simulated andnimplemented successfully, for the first time. The results of simulation and implementation demonstratenthe success of the presented novel solution and control algorithms for the cycloconverter. Copyright ©n2011 John Wiley & Sons, Ltd.