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This paper reflects the study of a Power-Factor-Correction (PFC) boost converter's nonlinearity. A peak current controlled boost converter is simulated in continuous conduction mode (CCM) to study the dynamics through the bifurcation diagrams. The study shows that with changes of certain parameters the bifurcation and chaotic state may occur. The bifurcation diagrams indicate the stable zone of various...
This paper proposes design and implementation of an optimal Type-II controller by using Gravitational Search Algorithm (GSA) for obtaining better stability and performance of a closed loop DC-DC Switched Mode Boost Converter. Due to presence of a right-half-plane zero, boost converter suffers from non minimum phase problem in converter dynamics and it is difficult for the conventional PID controller...
DC-DC converters lie at the heart of power electronic systems, finding usage in popular applications like Switched Mode Power Supplies (SMPS). Such demanding applications invariably require constant voltage irrespective of any changes on the load or input side. The un-modeled dynamics and external/internal disturbances make this objective even more challenging. This puts strict restrictions on the...
This paper describes the complex behaviors (i.e. Chaos and Bifurcation) of flyback converter under peak current-mode control. Firstly, an iterative map based converter model is developed from it's on and off states equations to study these complex dynamics. Then primary bifurcation parameters of converter like reference current, input voltage, load resistance, inductance and output capacitance are...
In a distribution network of a large utility like an integrated steel plant, the major electrical machinery like distribution transformers are often subjected to normal and abnormal voltage and current stresses due to frequent switching operations. In this paper we simulate a portion of the distribution network of Durgapur Steel Plant using MATLAB 7.9 and observe the effects of switching of feeders,...
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