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Power Factor Correction (PFC) AC-DC converters can present some undesirable nonlinear phenomena that cause subharmonic oscillations at the line frequency characterized by a power factor less than 0.7 and high Total Harmonic Distortion (THD). In this paper, the stability boundary for boost PFC converter is obtained. A unified analytical and practical approach for stability analysis of both pre-regulator...
In this paper we use a new discrete time model of a boost power factor correction (PFC) AC-DC circuit under fixed frequency average current control to obtain dynamical behaviors of the system at different scales of frequency. This system is characterized by two different forcing periods and thus by two different scales of time. Four different kinds of standard instability phenomena are possible depending...
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