Comparison of Parameterisation Models for the Estimation of the Maximum Power Output of PV Modules

A new PV module performance model based on separation of diffuse and direct light

“…As it turned out, relationship between P mpp-dif@Tstc and G poa-dif have a nonlinear characteristic at lower irradiances and linear fitting function would result in higher deviation, relatively. To achieve a good agreement with experimental results, a non-linear term according to Ding et al (2012) was added in the equation of the diffuse light power model. The modified model P model-dif-CIGS (with additional coefficient k dif-ll ) is described as:…”

“…Heuristic models (Ding et al, 2012;Marion, 2008) generally assume a constant temperature coefficient of the electric power at maximum power point (c), while the maximum power at STC temperature of 25°C (P model ) is a fitting function of irradiance in a plane of array (G poa ), where T STC = 25°C, T module is module/cell temperature and P mpp is maximum power of a PV module, as shown in Eq. (1).…”

“…On the other hand, heuristic models are based on outdoor measurement and present maximum output power as a fitting function of PV module's operating conditions, such as temperature and solar irradiance (Marion et al, 2004). Many comparisons of heuristic modules have been already performed (Ding et al, 2012;Friesen et al, 2009;Dittmann et al, 2010), showing that increase in complexity of a power model fitting function does not necessarily bring significant improvement in accuracy. Accuracy is limited especially at lower irradiance levels when the ratio of diffuse to total irradiance is higher and the sun position is lower thus direct light hits PV modules at higher incident angles.…”

Modelling photovoltaic power

“…Following medium case scenarios EPIA reports that around 8-9 GWp per year of new PV power systems could be installed in EU countries by 2018. While it is clear that there is a growing demand for PV system performance monitoring/recording, there is also a demand for models [2] that can more accurately estimate the expected power output with a few basic input parameters. In addition, a comparison between actual and expected power will aid the detection of possible problems during the operational life time of a photovoltaic system.…”

Reliabilitystudy of Solar PV Power Production In Terms Of Weather Parameters Using Monte Carlo Simulation

“…Moreover, the reliability factor is also dependent on the operation time and gets decreased when operated for a very long time [8]. In [9], estimation of the maximum power output of photovoltaic (PV) modules with different numbers of parameters including irradiance and PV module temperature as inputs has been used. And .…”