In this paper, a comprehensive harmonic domain
reference frame (HDRF) model of a voltage source converter
(VSC) grid interactive photovoltaic (PV) system is presented.
The model is useful for assessing the harmonic coupling between
the PV system and the network. Different components of the PV
system such as inverter, LCL filter and interconnecting trans-
former have been incorporated in the model. Using this model,
harmonic currents from PV system connected to both distorted
and undistorted networks have been quantified. Also, the model
has been deployed in investigating resonance occurrence in a
medium-voltage distribution network (MVDN) where the results
provide interesting technical insight and understanding.