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The validity of applying state-space averaging and linearization to the control law of current-injected switching regulators for designs with wide-band, first-order, open-loop responses without RHP zeroes is verified. Quantitative closed-loop performance comparisons are made of current-injected versus voltage control for the boost and buck switching regulator topologies.
Small-signal model of coupled-inductor Ćuk converter including parasitic minding resistances is derived, and its essential network functions are presented. The basic model is transformed into an easy to use simplified form with analytic expressions for the zeros and poles locations. The dynamic properties of two practically important cases of inductor coupling are discussed and conditions for minimum-phase...
Five basic operating modes of the parallel resonant converter are analyzed. Three of the modes occur when the output filter inductor is removed and the remaining two occur when the filter inductor is large. Closed-form solutions are found for the two most important modes. Switching frequency, peak tank capacitor voltage, and peak tank inductor current are plotted in the output plane. These plots,...
This paper describes a control scheme of a high frequency, high power current source inverter using static induction transistors to suppress the surge voltage and to reduce the switching loss during the commutation of current. The inverter is operated at a leading power factor, which requires the phase angle of the output current to be adjusted to each specific load point by the controller. The stable...
With the introduction and wide acceptance of gate turn off power devices (e.g. Bipolars, Power Fets, GTO's, etc.), the switching behavior of converters has reached the point where further improvements in firing and switching networks bring only marginal benefits. Consequently, the research interests in the area of static converters have been shifting toward improving the process of power conversion...
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