%0 Journal Article
%T Second-Order Harmonic Reduction Technique for Photovoltaic Power Conditioning Systems Using a Proportional-Resonant Controller
%A Hae-Gwang Jeong
%A Gwang-Seob Kim
%A Kyo-Beum Lee
%J Energies
%D 2013
%I MDPI AG
%R 10.3390/en6010079
%X This paper proposes a second-order harmonic reduction technique using a proportional-resonant (PR) controller for a photovoltaic (PV) power conditioning system (PCS). In a grid-connected single-phase system, inverters create a second-order harmonic at twice the fundamental frequency. A ripple component unsettles the operating points of the PV array and deteriorates the operation of the maximum power point tracking (MPPT) technique. The second-order harmonic component in PV PCS is analyzed using an equivalent circuit of the DC/DC converter and the DC/AC inverter. A new feed-forward compensation technique using a PR controller for ripple reduction is proposed. The proposed algorithm is advantageous in that additional devices are not required and complex calculations are unnecessary. Therefore, this method is cost-effective and simple to implement. The proposed feed-forward compensation technique is verified by simulation and experimental results.
%K second-order harmonic
%K photovoltaic power conditioning system (PCS)
%K single-phase inverter
%K proportional-resonant (PR) controller
%K ripple reduction
%U http://www.mdpi.com/1996-1073/6/1/79