PV Derived Data for Predicting Performance

William Marion

Research output: NRELPoster

Abstract

A method is described for providing solar irradiance data for modeling PV performance by using measured PV performance data and back-solving for the unknown direct normal irradiance (DNI) and diffuse horizontal irradiance (DHI), which can then be used to model the performance of PV systems of any size, PV array tilt, or PV array azimuth orientation. Ideally situated for using the performance data from PV modules with micro-inverters, the PV module operating current is used to determine the global tilted irradiance (GTI), and a separation model is then used to determine the DNI and DHI from the GTI.
Original languageAmerican English
StatePublished - 2015

Publication series

NamePresented at Solar Power International, 14-17 September 2015, Anaheim, California

NREL Publication Number

  • NREL/PO-5J00-64707

Keywords

  • model
  • PV module
  • solar irradiance

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