This letter proposes a boost dc–dc converter topology with the novel capability of canceling input current ripple at an arbitrarily preselected duty cycle. is accomplished without increasing count number components in contrast to other solutions available literature. In addition, features high voltage gain utilizing extreme values cycle or boosting transformers. These make ideal process electric power coming from low-voltage power-generating sources, such as renewables. paper provides...

This article addresses the problem of stabilization dc–dc converters feeding constant power loads (CPLs). An explicit model predictive control is developed based on an average a boost converter. The optimal law obtained offline by solving multiparametric nonlinear programming over simplex partition state space. performance validated through simulation and experimental studies. A delay compensation scheme included for online implementation. able to drive output voltage desired level stabilize...

This study presents a novel topology of buck–boost converter that features: (i) quadratic voltage gain; (ii) positive output with respect to the input; (iii) continuous input current. Moreover, as main contribution, (iv) it features minimum ripple design, for which current and ripples are simultaneously cancelled at desired operating point. It is also shown even though duty cycle deviates from nominal point, exhibits significantly low switching percentage within full operation range. The...

This study proposes several dynamic models for a DC–DC multilevel boost converter. A full-order non-linear model, reduced-order model and small-signal are derived. These based on the equivalent circuits that depend switching states of In addition, an input–output feedback linearisation controller is derived implemented. The stability closed-loop system analysed. Linux-based real-time software employed obtaining experimental results system.

In this paper, we review relevant problems in the modeling of dc-dc converters with switched capacitors. We study several approaches that overcome exposed difficulties, addressing ideal and nonideal cases using dynamic equations are valid a large-signal domain.

Our contribution in this paper is twofold. In the first part, we study Lyapunov functions when a plant interconnected with dissipative stabilizing controller. second, present results on data-driven approach to systems. particular, provide conditions under which an observed trajectory can be used determine whether system respect given supply rate. are based linear difference systems for use of quadratic forms play central role dissipativity and theory.

This study proposes a non-isolated quadratic boost converter (QBC) that features low-output-voltage ripple with respect to traditional QBCs. advantage is in contrast other topologies require higher amount of stored energy by capacitors achieve the same output-voltage specification. benefit permits design compact converter, since size proportional their storage rating. Moreover, proposed transformerless topology suitable for applications high-voltage gains as case renewable applications. The...

The authors propose a novel step-up converter with stackable switching stages that is suitable for renewable energy applications. On the one hand, gain corresponds to of traditional quadratic boost converter, achieving an arbitrary exponential in extended configurations. other proposed requires single switch, while output voltage partitioned among several capacitors. As argued this work, features topology represent significant contribution respect standard topologies exhibit greater stress....

Direct-write additively manufactured (AM) high-performance lithium titanate (Li2TiO3) microwave RF ceramic with comparable density, dielectric constant, loss, and quality factor to traditionally made equivalents is demonstrated. Increasing the surface-to-volume ratio interfacial free energy in designed electrosteric slurries shown be effective for driving pressureless sintering porosity elimination. A relative density as high 96.4% was achieved without application of pressure. $$Q\times F$$...

We introduce a new dc-dc converter topology with the following features: first, quadratic voltage gain, which allows to work over wide range minimal variation of duty cycle and without use extreme cycles; second, output ripple mitigation, can be accomplished respect fixed but otherwise arbitrary by proper selection components switching signals. Since proposed designed have zero for nominal gain (duty cycle), this small values capacitances. The underlying principles steady-state equations in...

This study proposes a resonant switched capacitor voltage multiplier with novel switching strategy. The proposed implementation provides high gain in comparison other traditional approaches, this is achieved by charging every the of all previous charged capacitors. A safe commutation procedure also presented which errors are avoided regardless variations frequency, resonance frequency may be caused tolerance passive components. converter offers capability to drain current through devices...

Phase-locked loop (PLL) systems play a crucial role in grid synchronization. Since variations on the voltage parameters are general uncertain, dynamics of PLLs by nature nonlinear. This fact imposes relevant challenge to guarantee their stability. Unfortunately, as argued this paper, there is remarkable lack global stability tests even for most common approaches, such <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">synchronous reference...

The increasing interest in renewable energy sources has brought attention to large voltage-gain dc–dc converters; among the different available solutions perform a conversion, this article presents an overview of non-isolated converter topologies that utilize switched-capacitor circuits, i.e., diode-capacitors voltage multipliers. review includes combinations traditional power stage with diode-capacitor-based multiplier, such as multilevel boost converter. This starts by reviewing (SC)...

The integration of renewable energy into the grid demands development increasingly more sophisticated power electronics configurations. This situation has motivated current boom new converter topologies. Even though most recently proposed converters are scattered across literature, some them can be classified in a taxonomical fashion. action permits studying their properties, generalizing principles, and generating contributions with improved features—these general aims overall research...