I am modelling grid tied solar PV with backup battery and I inserted load between solar system and grid. According to the graph of rms currents: Igrid = Ipv + Iload, which doesnt make any sense to me (how is it possible that grid feeds solar PV). My aim is to model the system in the way that solar system covers load and if the production of solar PV is not sufficient, battery will support and discharge and utility grid will be used in the case that battery is empty or load is too high. I used three phase source (Matlab block) with transformer and some feeder as an utility grid. Is there any solution how to model this kind of system? Any guess what could be wrong? Could you recommend me some paper or Matlab model?
Thank you in advance
Follow this link:
https://in.mathworks.com/matlabcentral/fileexchange/34752-grid-connected-pv-array
Article Modeling and simulation of grid-connected photovoltaic distr...
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