Research of Harmonic Distortion in Photovoltaic Single phase Grid connected

Nowadays，grid connected photovoltaic（PV）system was an emerging technology，the problem of harmonic in photovoltaic grid connected was also concerned.Harmonic distortion caused by the switching frequency of photovoltaic grid connected system was discussed，and the photovoltaic simulation model was established by the mode of tensor transformation.Comparation of simulation results and the measured values showed that change of system parameters and quality of electric energy could be affected in different frequency range of switching frequency.