Accurate Power Measurements of High Capacitance PV Modules with Short Pulse Simulators in a Single Flash

Herrmann, W.; Therhaag, U.; Dreier, C.; Morita, K.; Etienne, D.; Monokroussos, Christos

doi:10.4229/27theupvsec2012-4bv.4.41

Cited by 3 publications

(1 citation statement)

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“…An alternative method was presented in 2012 by Virtuani et al [24], and later on commercialized by the Swiss solar simulator manufacturer Pasan (now propriety of Meyer Burger) with the name Dragonback TM : the approach proposed to reconstruct a quasi-steady-state I-V curve of a capacitive module during a single 10 ms flash by applying a customized voltage profile. (A similar approach was also proposed the same year by Monokroussos et al [25]). Other different methods later on followed, developed by other solar simulator manufacturers: the hysteresis TM method by h.a.l.m.…”

Section: Introduction: Higher Efficiencies Larger Cells Longer Pulse ...mentioning

confidence: 86%

The effect of capacitance on high-efficiency photovoltaic modules: a review of testing methods and related uncertainties

Pravettoni

Poh

Singh

et al. 2021

J. Phys. D: Appl. Phys.

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The effect of solar cell capacitance in the electrical characterization of photovoltaic (PV) modules at Standard Test Conditions (STC) is known since the 1990s. With the efficiency of solar modules increasing in the years, the corresponding measurement artefact has been generally resolved with long pulse simulators, from few milliseconds in the 2000 s and up to hundred milliseconds nowadays. With the last improvements in module technology, with the growing interest in n-type silicon and silicon heterojunction, and with the increasing wafer and cell sizes, it is demonstrated that even 100 ms simulators are no longer enough for accurate direct I–V measurements. The need for continuous simulators is therefore becoming more frequent even for accurate measurement of commercial size modules. This work summarizes the basic physics behind the effect of capacitance on the electrical characterization of silicon PV modules, with the simplest approach of a single diode capacitive model and with examples from high efficiency modules commercially available. It reviews eight measurement methods to mitigate the effect for accurate electrical characterization at STC; finally, it presents a novel and comprehensive analysis of the uncertainty contribution to the maximum power and open-circuit voltage determination of these measurement methods. The paper is a review of the best practices in advanced testing laboratories of silicon PV modules nowadays, and it represents a contribution addressed to metrologists, researchers and module manufacturers.

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Section: Introduction: Higher Efficiencies Larger Cells Longer Pulse ...mentioning

confidence: 86%

The effect of capacitance on high-efficiency photovoltaic modules: a review of testing methods and related uncertainties

Pravettoni

Poh

Singh

et al. 2021

J. Phys. D: Appl. Phys.

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Standardising current–voltage measurements for metastable solar cells

Fell

2019

J. Phys. Energy

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The present situation with respect to current-voltage measurement standards for metastable photovoltaics, including perovskites, is discussed. New draft updates to the IEC 60904-1 standard do not fully capture the needs of metastable devices. A new document within the 60904 series capturing the academically favoured SPO and MPPT methods would go a long way toward solving the present ambiguity, however the lack of an effective stabilisation procedure remains the greatest hurdle for perovskite PV.

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Optimising I-V measurements of high capacitance modules using dark impedance measurements

Eeles

Gottschalg

Betts

2016

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)

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Accurate Power Measurements of High Capacitance PV Modules with Short Pulse Simulators in a Single Flash

Cited by 3 publications

References 0 publications

The effect of capacitance on high-efficiency photovoltaic modules: a review of testing methods and related uncertainties

The effect of capacitance on high-efficiency photovoltaic modules: a review of testing methods and related uncertainties

Standardising current–voltage measurements for metastable solar cells

Optimising I-V measurements of high capacitance modules using dark impedance measurements

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