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One Cycle Control Design for High Performance Two-Level Power Inverters

Ferreira, C. ; Borges, B. ; Sá, L. V.

One Cycle Control Design for High Performance Two-Level Power Inverters, Proc Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. -, pp. - - -, May, 2009.

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Abstract
Constant frequency One Cycle Control (OCC), as proposed by Smedley, is a powerful method for controlling switching power converters. Dimensioning of this control method is not of common knowledge, and as far as the authors now, has not yet been published for two level AC output converters. This paper describes OCC for two level switched power converters. Its instability problems and solutions are analysed and dimensioning equations are deducted. This technique allows constructing stable high bandwidth power converters with low output THD and high PSRR. The obtained analytical expressions are compared with experimental results, showing good correlation.