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Innovative memristor-centered strategies to sense, store, and process information may be tested inexpensively and reliably exploiting the nonlinear dynamics of simple emulators based upon standard two-terminal devices from electrical circuit theory. Should a promising outcome emerge from the emulator-based tests, the novel strategies would be later implemented with memristor nanodevices. A wide variety...
To extend the concept of the memristive systems to capacitive systems, memcapacitive systems have been described in 2009. Memcapacitors which are a subset of memcapacitive systems are flux-dependent nonlinear circuit elements with memory. Materials with memcapacitive properties has already been reported in literature. The elusive memcapacitor show promise for new type of applications because of their...
This paper presents a new subharmonic analysis for buck converters with constant on-time control and ramp compensation. For constant on-time control, subharmonic oscillation can be eliminated by adding a compensation ramp with a fixed slope during the off time and a fixed level during the on time. Based on the inductor current information, the compensation ramp, and the charge variations of the output...
The development on PV applications along with recent breakthroughs in power electronics has became in a strong research area especially in modeling and control techniques. This paper presents an analysis of grid-connected photovoltaic systems using three different high-order dc/dc topologies: Cuk converter, SEPIC converter and Zeta converter. This work considers ideal PV systems and a voltage load...
MPPT is widely used in photovoltaic (PV) systems. Among all MPPT schemes, ESC is attractive because it utilizes inverter decoupling ripple and reduces decoupling capacitor size. In this paper, an improved variable step-size ESC algorithm is proposed, which not only has the merits of conventional ESC but also automatically adjusts step-size to track PV module maximum power point (MPP). Compared to...
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