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It is shown that internal low-frequency energy storage can be used to achieve harmonic-free operation and controllable power factors in converters whose desired operations require unequal instantaneous input and output powers, such as in single-phase rectifiers, inverters, cycloconverters, and reactive power generators. A systematic synthesis and analysis technique is developed for such converters...
The generation mechanism of backward noise is analyzed for a forward dc-to-dc converter. Here the backward noise is defined as the switching noise which flows back to input terminals. Its generation process consists of several states and there are two modes depending on the characteristics of the switching elements used in the converter. The analysis is performed by deriving the high-frequency equivalent...
This paper offers a new solution to the design of two-output dc-to-dc converters having one sole power transistor. The combination of a resonant converter and a tapped-inductor converter is the basis of this new approach which represents an improvement on previous studies. The fact that the dc voltage gain of the resonant converter is a function of the switching frequency but not of the load nor of...
The concept of resonant switch has been extended to generate a family of new quasi-resonant converter topologies. The converter circuits feature zero-current switching and are particularly suited for high-frequency (MHz) power-conversion applications.
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...
An ac to dc power conditioner, which draws sinusoidal input current, is described and analyzed. Two control loops are used. The inner quantized-gain current program loop uses variable hysteresis to improve noise immunity. Digital proportional-integral control provides output voltage regulation by adjusting the gain of the current program loop.
The paper presents four different methods to stabilize the operating frequency of hysteretic current mode DC/DC converters. It compares the merits of the different solutions. The effects of peak-current programming and operation in light mode are also investigated, and new circuits to achieve ideal properties are presented.
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