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JPE, Vol. 17, No. 5, September 2017
Modified RCC MPPT Method for Single-stage Single-phase Grid-connected PV Inverters
Chaiyant Boonmee and Yuttana Kumsuwan
Area Renewable Energy
Abstract In this study, a modified ripple correlation control (RCC) maximum-power point-tracking (MPPT) algorithm is proposed for a single-stage single-phase voltage source inverter (VSI) on a grid-connected photovoltaic system (GCPVS). Unlike classic RCC methods, the proposed algorithm does not require high-pass and low-pass filters or the increment of the AC component filter function in the voltage control loop. A simple arithmetic mean function is used to calculate the average value of the photovoltaic (PV) voltage, PV power, and PV voltage ripples for the MPPT of the RCC method. Furthermore, a high-accuracy and high-precision MPPT is achieved. The performance of the proposed algorithm for the single-stage single-phase VSI GCPVS is investigated through simulation and experimental results.
Keyword Arithmetic mean function,Grid-connected photovoltaic system,Maximum-power point tracking,Ripple correlation control,Single-stage single-phase voltage source inverter
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