Journal ArticleDOI
Series Loss-Free Resistor: Analysis, Realization, and Applications
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An analysis of the transient behavior of dc networks consisting of voltage sources, capacitors, and series loss-free resistors (SLFRs) is presented and it is demonstrated that even simple RC circuits containing SLFRs exhibit behavior that is described by Abel nonlinear differential equations.Abstract:
An analysis of the transient behavior of dc networks consisting of voltage sources, capacitors, and series loss-free resistors (SLFRs) is presented The realization of an SLFR was achieved by means of a topological variation of the positive output voltage buck–boost converter operated in discontinuous-conduction mode It is demonstrated that even simple RC circuits containing SLFRs exhibit behavior that is described by Abel nonlinear differential equations, which do not have an exact analytical solution Some possible applications of the SLFRs in power electronics, dc microgrids, and renewable energy power systems include loss-free charge and discharge of capacitor banks, voltage equalization of capacitors, and loss-free voltage clamping circuits The concept of the SLFR can also be applied for voltage control in dc microgrids, employing the droop voltage technique, equalization of power and current in voltage sources associated in parallel (including batteries and dc–dc converters), and also input and output voltage natural balance in input-series output-series association of dc converters The theoretical analysis results are validated via numerical examples and computer simulationread more
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Maximum Electrical Power Extraction from Sources by Load Matching
Comment on “Series Loss-Free Resistor: Analysis, Realization, and Applications”
TL;DR: In this paper , the concept of series loss-free resistor (SLFR) was presented by Barbi (2021), which was realized by novel circuitry derived by topological variation of classical noninverting buck-boost converter operated in discontinuous-conduction mode.
Journal ArticleDOI
Comment on “Series Loss-Free Resistor: Analysis, Realization, and Applications”
TL;DR: In this paper , the concept of series loss-free resistor (SLFR) was presented by Barbi (2021), which was realized by novel circuitry derived by topological variation of classical noninverting buck-boost converter operated in discontinuous-conduction mode.
References
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Journal ArticleDOI
Canonical modeling of power processing circuits based on the POPI concept
TL;DR: In this article, the fundamental power processing properties of switching converter circuits are modeled using generalized power-conservative (POPI) networks, and the application of the gyrator to network two voltage sources and the use of the loss-free resistor as a unity power factor rectifier are described.
Journal ArticleDOI
Realization of loss-free resistive elements
TL;DR: In this article, the realization of loss-free elements with resistive I-V characteristics is achieved by controlling the parameters of loss free two-ports that have a transformer or gyrator matrix.
Journal ArticleDOI
The application of 'loss-free resistors' in power processing circuits
TL;DR: In this paper, the synthesis of a loss-free element with resistive characteristics in power processing systems is discussed, based on the control of a two port which has a transformer or gyrator matrix.
Journal ArticleDOI
Synthesis of loss-free resistors based on sliding-mode control and its applications in power processing
Angel Cid-Pastor,Luis Martinez-Salamero,A. El Aroudi,Roberto Giral,Javier Calvente,Ramon Leyva +5 more
TL;DR: In this article, a systematic procedure to synthesize loss-free resistors (LFRs) based on slidingmode control (SMC) of DC-DC switching converters is presented.
Journal ArticleDOI
AC-LFR concept applied to modular photovoltaic power conversion chains
Hugo Valderrama-Blavi,Corinne Alonso,Luis Martinez-Salamero,Sigmond Singer,B. Estibals,Javier Maixe-Altes +5 more
TL;DR: In this paper, a cascade connection of a buck-boost converter operating in discontinuous conduction mode and a push-pull switching inverter is presented for grid-connected photovoltaic systems based on the loss-free resistor concept.