Charging a capacitor with a photovoltaic module

Aguilar, Horacio Munguía; Maldonado, Rigoberto Franco; Navarro, Luis Barba

doi:10.1088/1361-6552/aa6d2b

Cited by 11 publications

(6 citation statements)

References 2 publications

(2 reference statements)

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“…In fact, experiments have shown that V c increases linearly in the early stage of the charging. However, at later stage of charging, the V c curve resembles the behavior of the circuit charged by battery, and starts to level off when approaches the output voltage limit of solar cells [4]. A Van de Graaff generator was used as a constant current source to charge capacitors, and V c was observed to strictly follow the linear behavior [5].…”

Section: The Most Energy Efficient Way To Charge the Capacitor In A R...mentioning

confidence: 99%

The most energy efficient way to charge the capacitor in a RC circuit

Wang

2017

Phys. Educ.

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The voltage waveform that minimize the energy loss in the resistance when charging the capacitor in a resistor-capacitor circuit is investigated using the calculus of variation. A linear voltage ramp gives the best efficiency, which means a constant current source should be used for charging. Comparison between constant current source and battery-powered system is made to illustrate the energy advantage of the former.

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Section: The Most Energy Efficient Way To Charge the Capacitor In A R...mentioning

confidence: 99%

The most energy efficient way to charge the capacitor in a RC circuit

Wang

2017

Phys. Educ.

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“…The method of using variable resistors is often simple to implement [71] but poses difficulties with accuracy, resolution, sweep speed, and scalability [70,77]. Capacitive loads serve as a more practical option for scalable rapid measurements [78][79][80][81][82][83][84][85]. The capacitive loads must be designed for specific sizes, which may cause this technique to suffer in scalability and cost, without the flexibility to measure larger system sizes.…”

Section: I-v Curve Tracersmentioning

confidence: 99%

Measuring outdoor I–V characteristics of PV modules and systems

et al. 2022

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The cumulative installed capacity of photovoltaics has passed 1 TW, of which about two-thirds were only installed in the past five years. Many of these new installations incorporate novel module and cell designs that have not yet been subjected to long-term in-field characterization. Indoor accelerated stress testing has historically been a valuable methodology to identify fault mechanisms, estimate degradation rates, and to ensure the safety and normal operation of modules in the field. Still, these methodologies deliver an incomplete image of the exact stress mechanisms that photovoltaic systems are subject to outdoors, which vary with location, time of day, and time of year. In this work we review different outdoor methods to measure current-voltage characteristics of photovoltaic systems, discuss how the environmental conditions impact those characteristics, and examine alternative methodologies for acquiring light and pseudo current-voltage characteristics more applicable to larger scale installations. This review also provides an insight into methods useful for real-time monitoring and degradation analysis at the module and string level.

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“…In [28], a genetic algorithm based on a bee colony is used to obtain the parameters of a PV cell after plotting its I-V curve with a capacitive tracer. In [29], [30], [31], and [32], the operation of this type of tracer, and different methods of connecting the capacitor, are discussed.…”

Section: Capacitive Load Tracermentioning

confidence: 99%

A Review of I–V Tracers for Photovoltaic Modules: Topologies and Challenges

et al. 2021

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Current–voltage (I–V) curve tracers are used for measuring voltage and current in photovoltaic (PV) modules. I–V curves allow identifying certain faults in the photovoltaic module, as well as quantifying the power performance of the device. I–V curve tracers are present in different topologies and configurations, by means of rheostats, capacitive loads, electronic loads, transistors, or by means of DC–DC converters. This article focuses on presenting all these configurations. The paper shows the electrical parameters to which the electronic elements of the equipment are exposed using LTSpice, facilitating the appropriate topology selection. Additionally, a comparison has been included between the different I–V tracers’ topologies, analyzing their advantages and disadvantages, considering different factors such as their flexibility, modularity, cost, precision, speed or rating, as well as the characteristics of the different DC–DC converters.

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Charging a capacitor with a photovoltaic module

Cited by 11 publications

References 2 publications

The most energy efficient way to charge the capacitor in a RC circuit

The most energy efficient way to charge the capacitor in a RC circuit

Measuring outdoor I–V characteristics of PV modules and systems

A Review of I–V Tracers for Photovoltaic Modules: Topologies and Challenges

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