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Journal ArticleDOI

Current-Ripple-Free Module Integrated Converter With More Precise Maximum Power Tracking Control for PV Energy Harvesting

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TLDR
In this article, a passive ripple canceling circuit (PRCC) is proposed to eliminate the output power reduction effect of photovoltaic (PV) systems caused by the current ripple of the PV converters.
Abstract
In this paper, a passive ripple canceling circuit (PRCC) is proposed to eliminate the output power reduction effect of photovoltaic (PV) systems caused by the current ripple of the PV converters. Special features of the proposed PRCC include having low-cost simple modular structure and being independent of the duty ratio control of the main power circuit. Hence, it can be easily integrated to the main power circuit to achieve zero input current ripple, yielding less filter size, loss, and fast response. Meanwhile, the linear line maximum power point tracking (MPPT) control is also integrated with the proposed module integrated converter (MIC) to achieve instantaneous tracking response. Finally, a 90-W laboratory prototype is constructed to verify the effectiveness of the proposed principle. It is seen that the resulting peak-to-peak input current ripple is reduced to about 2% of the original dc converter input ripple. In other words, the input current ripple is almost zero. As a result, the harvested power of the proposed MIC can be increased by 7% as compared with that of the MIC without the proposed PRCC.

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Citations
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Journal ArticleDOI

Power tracking techniques for efficient operation of photovoltaic array in solar applications – A review

TL;DR: The traits presented in this paper are novel and provide bottom-line for the researchers to select and implement an appropriate MPPT technique.
Journal ArticleDOI

High-Performance Quasi-Z-Source Series Resonant DC-DC Converter for Photovoltaic Module Level Power Electronics Applications

TL;DR: In this paper, a quasi-Z-source series resonant dc-dc converter is proposed for photovoltaic module-level power electronics applications, where the shoot-through pulse width modulation and phase shift modulation are combined in a single switching stage to realize the boost and buck operating modes.
Journal ArticleDOI

An Improved MPPT Method for PV System With Fast-Converging Speed and Zero Oscillation

TL;DR: An improved Beta-parameter-based MPPT method is proposed in this paper, which can identify and maintain the middle point of the three-level perturbations, which eliminate the oscillations at a steady state and enhances the tracking speed and is easily applied for any PV power system.
Journal ArticleDOI

Analysis and Design of a Single-Switch High Step-Up Coupled-Inductor Boost Converter

TL;DR: The proposed converter features continuous input current, which is desirable and friendly to the battery, fuel cell, and photovoltaic applications, and the reverse recovery problem of the diodes can be alleviated and leakage energy can be recycled.
References
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Journal ArticleDOI

Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays

TL;DR: In this article, the authors proposed a method of modeling and simulation of photovoltaic arrays by adjusting the curve at three points: open circuit, maximum power, and short circuit.
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Renewable energy today and tomorrow

TL;DR: The technical status, cost, and applications of major renewable energy technologies and implications for increased adoption of renewables will be reviewed.
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Distributed Generation: Toward a New Energy Paradigm

TL;DR: In this article, the authors discuss distributed generation which is emerging as a new paradigm to produce on-site highly reliable and good quality electrical power and present the DG systems as a suitable form to offer highly reliable electrical power supply.
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Renewable Energy Systems With Photovoltaic Power Generators: Operation and Modeling

TL;DR: It is demonstrated that when PV array- inverters are operating in the master mode in stand-alone applications, they well perform the task of controlling the voltage and frequency of the power system and that PV power generators constitute a valuable energy source.
Journal ArticleDOI

Microcomputer Control of a Residential Photovoltaic Power Conditioning System

TL;DR: In this paper, a microcomputer-based control of a residential photovoltaic power conditioning system is described, which is responsible for array current feedback control, maximum power tracking control, array safe zone steering control, phase-locked reference wave synthesis, sequencing control, and some diagnostics.
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