Experimental Performance of MPPT Algorithm for Photovoltaic Sources Subject to Inhomogeneous Insolation

Carannante, G.; Fraddanno, C.; Pagano, Mario; Piegari, Luigi

doi:10.1109/tie.2009.2019570

Cited by 180 publications

(67 citation statements)

References 24 publications

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“…Equations (10) and (11), can be re-written as Equation (12). This equation shows that the output voltage and current of the system depends directly on the duty cycle of the converter and that any change in duty cycle will lead to a change in the intersection point of I_V curve and load line.…”

Section: Circuit Topology and Operation Of The Dc-dc Converter In Thementioning

confidence: 99%

Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique

et al. 2016

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Abstract:Partial shading is an unavoidable condition which significantly reduces the efficiency and stability of a photovoltaic (PV) system. When partial shading occurs the system has multiple-peak output power characteristics. In order to track the global maximum power point (GMPP) within an appropriate period a reliable technique is required. Conventional techniques such as hill climbing and perturbation and observation (P&O) are inadequate in tracking the GMPP subject to this condition resulting in a dramatic reduction in the efficiency of the PV system. Recent artificial intelligence methods have been proposed, however they have a higher computational cost, slower processing time and increased oscillations which results in further instability at the output of the PV system. This paper proposes a fast and efficient technique based on Radial Movement Optimization (RMO) for detecting the GMPP under partial shading conditions. The paper begins with a brief description of the behavior of PV systems under partial shading conditions followed by the introduction of the new RMO-based technique for GMPP tracking. Finally, results are presented to demonstration the performance of the proposed technique under different partial shading conditions. The results are compared with those of the PSO method, one of the most widely used methods in the literature. Four factors, namely convergence speed, efficiency (power loss reduction), stability (oscillation reduction) and computational cost, are considered in the comparison with the PSO technique.

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Section: Circuit Topology and Operation Of The Dc-dc Converter In Thementioning

confidence: 99%

Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique

et al. 2016

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“…Due to dissimilarities of panel production, different temperatures and irradiations -due to panel orientation, aging or partial shading [4] -PV modules cannot produce identical energy in an array. Hence, in a long string PV array, this situation may result in the lost of the MPP, which reduces the overall efficiency of the entire array and, in some cases, can cause degeneration of the panels due to the hot spot phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Integrated ZVT Cell Applied to Decentralized Multi-String PV System

Beltrame¹,

Desconzi²,

Martins³

et al. 2024

RE&PQJ

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Abstract. This paper exploits the advantages of using a cascaded connection of dc-dc step-up stages for a series string of photovoltaic (PV) panels in a single-phase residential/commercial grid connected installation. It is demonstrated that when multistring PV systems are adopted in order to minimize shadowing problems, it is required to employ some approach to reduce the switching losses (turn-on losses of MOSFETs and mainly diode reverse-recovery losses) of the dc-dc step-up stages. As a multistring PV system is normally comprised by several dc-dc stepup stages, integrated soft-switching topologies are attractive due to their compactness, reliability and low cost. Thus, this work proposes to use an integrated zero-voltage transition (ZVT) cell, which assists all dc-dc step-up stages and employs a very compact circuit, enabling to minimize the switching losses, improving the system efficiency. The proposed cell makes use of a magnetically-coupled auxiliary voltage source implemented by adding a secondary winding on the input inductors. In order to validate the proposed topology, experimental results are presented.

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“…2. Power feedback method: (5,6) Because the voltage feedback method cannot cope with abrupt changes and perhaps fails to reach MPPT, the power feedback method is used which introduces an output power change with respect to a voltage change. When dP/dV = 0, the MPPT is accomplished.…”

Section: Introductionmentioning

confidence: 99%

A Solar Power Regulation System Equipped with Intelligent Solar Power Detector

2017

Sensors and Materials

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This paper describes a solar energy power regulation system using solar power detectors. The system developed comprises a cubic solar power detector, DC-DC converter, three-phase inverter, and a single-chip control module. The cubic solar power detector is composed of five facets installed with front, rear, left, right, and horizontal photo sensors. By detecting solar power coming from different orientations, the solar orientation and solar power can be optimized based on a geometric transformation principle, which evaluates the relationship between photo-power and solar orientation for each sensor. Because the output power of a solar cell can significantly affect the generating capacity of the cell, a solar energy power regulation system was developed to regulate the electricity generated. The solar generating power is monitored by a cubic solar power detector and regulated by a three-phase pulse width modulation inverter. This paper describes the realization and implementation of a solar power regulation system, and experiments have been carried out to validate the performance. Measurements reveal that the system is definitely effective in regulating solar power output and can successfully boost solar power generating capacity.

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Experimental Performance of MPPT Algorithm for Photovoltaic Sources Subject to Inhomogeneous Insolation

Cited by 180 publications

References 24 publications

Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique

Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique

Integrated ZVT Cell Applied to Decentralized Multi-String PV System

A Solar Power Regulation System Equipped with Intelligent Solar Power Detector

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