PV Module Parameter Characterization From the Transient Charge of an External Capacitor

Spertino, Filippo; Sumaili, Jean; Andrei, Horia; Chicco, Gianfranco

doi:10.1109/jphotov.2013.2271191

Cited by 43 publications

(29 citation statements)

References 10 publications

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“…Fig. 3 shows the classical single-exponential model of a solar cell (Spertino et al, 2013) which supplies a capacitor modelled as the parallel of the capacitance (C) and the isolation resistance (R C ). An output current equation of the solar cell can be written as:…”

Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

“…Nevertheless, when a PV generator is made of the parallel connection of strings and the strings are made of the series connection of PV modules (normally, a group of cells in series), the parasitic capacitance (junction and ground coupling) and leakage inductance are required (Spertino et al, 2013) to understand the behavior of the equivalent circuit in Fig. 3.…”

Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

“…In particular, during the tests, the transient charging starts from the open circuit condition for the PV generator and occurs at the closing of the power breaker (PB): after the step variation in the current signal, some oscillations appear (Spertino et al, 2013). These swings exhibit amplitudes and frequency depending on the external Fig.…”

Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

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Capacitor charging method for I–V curve tracer and MPPT in photovoltaic systems

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Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

Section: The Transient Charging Of a Capacitor Supplied By A Pv Genermentioning

confidence: 99%

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Capacitor charging method for I–V curve tracer and MPPT in photovoltaic systems

et al. 2015

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“…2016, 6, 261 2 of 17 suitable for low power application [11]. Most of the MPPT techniques require the panel parameter values [12] and are based on both measurements of PV current and voltage. Another important aspect is regarding the priority consumption of the green energy production versus traditional production from fossil energy sources, which is also pursued by means of fault-tolerant converters [13].…”

Section: Description Of the Systemmentioning

confidence: 99%

Control and Modulation Techniques for a Centralized PV Generation System Grid Connected via an Interleaved Inverter

et al. 2016

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Abstract:In the context of grid connected photovoitaic (PV) generation systems, there are two paramount aspects regarding the Maximum Power Point Tracking (MPPT) of the photovoltaic units and the continuity of the service. The most diffused MPPT algorithms are based on either perturb and observe, or on an incremental conductance approach and need both PV current and voltage measurements. Several topology reconfigurable converters are also associated with the PV plants, guaranteeing fault-tolerant features. The generation continuity can also be assured by interleaved inverters, which keep the system operating at reduced maximum power in case of failure. In this paper, an evolution of a hysteresis based MPPT algorithm is presented, based on the measurement of only one voltage, together with a novel space vector modulation suitable for a two-channel three-phase grid connected interleaved inverter. The proposed MMPT algorithm and modulation technique are tested by means of several numerical analyses on a PV generation system of about 200 kW maximum power. The results testify the validity of the proposed strategies, showing good performance, even during a fault occurrence and in the presence of deep shading conditions.

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“…The automatic data acquisition system, described in [6], is periodically calibrated and is made of: The I-V curves of a PV array was measured with a capacitive load, detecting simultaneously voltage, current, irradiance and temperature [16], [17]. The next data-processing to achieve the Standard Test Conditions (STC, G=1 kW/m 2 , T c =25 °C) parameters is performed by a conventional correction method [18].…”

Section: Measurements Of I-v Curves On Pv Arraysmentioning

confidence: 99%

A power and energy procedure in operating photovoltaic systems to quantify the losses according to the causes

et al. 2015

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Recently, after high feed-in tariffs in Italy, retroactive cuts in the energy payments have generated economic concern about several grid-connected photovoltaic (PV) systems with poor performance. In this paper the proposed procedure suggests some rules for determining the sources of losses and thus minimizing poor performance in the energy production. The on-site field inspection, the identification of the irradiance sensors, as close as possible the PV system, and the assessment of energy production are three preliminary steps which do not require experimental tests. The fourth step is to test the arrays of PV modules on-site. The fifth step is to test only the PV strings or single modules belonging to arrays with poor performance (e.g., I-V mismatch). The sixth step is to use the thermo-graphic camera and the electroluminescence at the PV-module level. The seventh step is to monitor the DC racks of each inverter or the individual inverter, if equipped with only one Maximum Power Point Tracker (MPPT). Experimental results on real PV systems show the effectiveness of this procedure.

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PV Module Parameter Characterization From the Transient Charge of an External Capacitor

Cited by 43 publications

References 10 publications

Capacitor charging method for I–V curve tracer and MPPT in photovoltaic systems

Capacitor charging method for I–V curve tracer and MPPT in photovoltaic systems

Control and Modulation Techniques for a Centralized PV Generation System Grid Connected via an Interleaved Inverter

A power and energy procedure in operating photovoltaic systems to quantify the losses according to the causes

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