Binary‐based tracer of photovoltaic array characteristics

Rivai, Ahmad; Rahim, Nasrudin Abd

doi:10.1049/iet-rpg.2013.0111

Cited by 25 publications

(11 citation statements)

References 18 publications

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“…Detailed PV module characteristics can be obtained by analyzing the solar cell equivalent circuit. Figure 1 shows the equivalent circuit of a solar cell based on the single diode model [22].…”

Section: Pv String Failure Analysismentioning

confidence: 99%

“…Energies 2019, 12, x FOR PEER REVIEW 3 of 17 cell equivalent circuit. Figure 1 shows the equivalent circuit of a solar cell based on the single diode model [22].…”

Section: Pv String Failure Analysismentioning

confidence: 99%

“…In these methods, the electrical parameters must be measured and monitored to enhance the PV system performances. The I-V characteristic analysis method, for instance, requires an I-V tracer to measure the corresponding current and voltage by sweeping a variable load on the output terminals of the PV source, and the test is conducted when the PV system is shutdown [21,22]. The analysis involved in power losses and voltage-current measurement methods are typically the comparison between the monitored data and the simulation results of the PV system [16].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Photovoltaic String Failure and Health Monitoring with Module Fault Identification

et al. 2019

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In this paper, photovoltaic (PV) string failure analysis and health monitoring of PV modules based on a low-cost self-powered wireless sensor network (WSN) are presented. Simple and effective fault detection and diagnosis method based on the real-time operating voltage of PV modules is proposed. The proposed method is verified using the developed health monitoring system which is installed in a grid-connected PV system. Each of the PV modules is monitored via WSN to detect any individual faulty module. The analysis of PV string failure includes several electrical fault scenarios and their impact on the PV string characteristics. The results show that a degraded or faulty module exhibits low operating voltage as compared to the normal module. The developed health monitoring system also includes a graphical user interface (GUI) program which graphically displays the real-time operating voltage of each module with colors and thus helping users to identify the faulty modules easily. The faulty modules identification approach is further validated using the PV module electroluminescence (EL) imaging system.

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Section: Pv String Failure Analysismentioning

confidence: 99%

“…Energies 2019, 12, x FOR PEER REVIEW 3 of 17 cell equivalent circuit. Figure 1 shows the equivalent circuit of a solar cell based on the single diode model [22].…”

Section: Pv String Failure Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Photovoltaic String Failure and Health Monitoring with Module Fault Identification

et al. 2019

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“…However, the I-V tracers based on this principle present a complexity drawback associated with the control of the load. Rivai and Rahim [24] propose a resistive load composed by a small set of resistors, combined in series, using binary codification with the help of a microcontroller. In this way, it is possible to accurately assess some commercial systems [34].…”

Section: Previous Workmentioning

confidence: 99%

Photovoltaic Device Performance Evaluation Using an Open-Hardware System and Standard Calibrated Laboratory Instruments

et al. 2017

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This article describes a complete characterization system for photovoltaic devices designed to acquire the current-voltage curve and to process the obtained data. The proposed system can be replicated for educational or research purposes without having wide knowledge about electronic engineering. Using standard calibrated instrumentation, commonly available in any laboratory, the accuracy of measurements is ensured. A capacitive load is used to bias the device due to its versatility and simplicity. The system includes a common part and an interchangeable part that must be designed depending on the electrical characteristics of each PV device. Control software, developed in LabVIEW, controls the equipment, performs automatic campaigns of measurements, and performs additional calculations in real time. These include different procedures to extrapolate the measurements to standard test conditions and methods to obtain the intrinsic parameters of the single diode model. A deep analysis of the uncertainty of measurement is also provided. Finally, the proposed system is validated by comparing the results obtained from some commercial photovoltaic modules to the measurements given by an independently accredited laboratory.

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“…For a smooth I–V curve, many points are needed hence requires a high number of resistors and relays. In [14 ], a simple I–V curve tracer using an array of binary‐numbered resistors was proposed. With a few binary‐numbered resistors, the tracer can produce a smooth I–V curve within 540.2 ms.…”

Section: Introductionmentioning

confidence: 99%

Multi‐channel photovoltaic current–voltage ( I – V ) curve tracer employing adaptive‐sampling‐rate method

Rivai

Rahim

Elias

et al. 2020

IET sci. meas. technol.

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In this study, a multi‐channel I–V curve tracer with the capability of measuring multiple photovoltaic (PV) modules has been proposed. An adaptive‐sampling‐rate method has been developed to enhance the I–V tracer's performance in terms of acquisition speed and data resolution in which enables the tracer to measure the I–V curve for a wider range of current and voltage with higher measurement points. This is important to provide rapid comparison and identification of faults that may have occurred in one or more PV modules. A low‐cost prototype was built using an Arduino‐based microcontroller, and the experimental tests were performed with 30 PV modules. The simulation and experimental results verified the performance and functionality of the proposed I–V curve tracer.

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Binary‐based tracer of photovoltaic array characteristics

Cited by 25 publications

References 18 publications

Analysis of Photovoltaic String Failure and Health Monitoring with Module Fault Identification

Analysis of Photovoltaic String Failure and Health Monitoring with Module Fault Identification

Photovoltaic Device Performance Evaluation Using an Open-Hardware System and Standard Calibrated Laboratory Instruments

Multi‐channel photovoltaic current–voltage ( I – V ) curve tracer employing adaptive‐sampling‐rate method

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