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Performance of photovoltaic systems greatly depends on climate conditions. Apart from values of solar radiation, its variations can also have an influence on energy yield from a PV-system. In less favourable climate conditions (e.g. in central Europe), highly varying radiation is very frequent and the electrical converters (i.e. inverters, DC-DC converters) should be able to follow the irradiance...
A laboratory setup for investigation of maximum power point trackers (MPPT) for photovoltaic (PV) modules is presented. It is composed of a PV module, an artificial light source and a universal maximum MPPT circuit. The PV module has been customised so that to enable investigation of partial shadowing effects and related countermeasures. Halogen lamps provide a constant irradiation and pulse operation...
The inverter is the key element in grid-connected photovoltaic systems. Measurements of inverter efficiency should take into account two phenomena: the DC/AC conversion and Maximum Power Point (MPP) tracking process.
In the present paper, behavioral computer SPICE models of photovoltaic modules are developed. The model parameters are automatically calculated using datasheet data. The temperature dependence of the model parameters is taken into account. The models are built in the form of parameterized blocks. The input data are the short circuit current Isc, the open circuit voltage Voc and two remarkable points...
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