Paper title: MODIFICATION OF THE INCREMENTAL CONDUCTANCE ALGORITHM IN GRID CONNECTED PHOTOVOLTAIC SYSTEMS
Author(s): MEHMET ALI OZCELIK, AHMED SERDAR YILMAZ,
Abstract: Operation of solar energy conversion systems influences the total efficiency during variable temperature and variable solar
irradiations. In addition to these atmospherical conditions, shading also affects the solar array efficiency. Due to nonlinear
current and voltage characteristics and variable efficiency of solar cells, operation point of solar cells should be fixed at
maximum power and efficiency. In order to generate maximum energy, solar photovoltaic (PV) systems should be run with
maximum power point trackers (MPPTs). Therefore it is reached to maximum power point changing with above external
factors. MPPT units are implemented to control converters which are connected to terminals of PV arrays. MPPTs operate
according to some algorithms to reach maximum power level in various conditions. This study presents a new modification on
incremental conductance (IncCond) algorithm, one of the well-known algorithms, to improve total efficiency of solar energy
conversion systems. Proposed modified algorithm is able to catch the new maximum power point quickly compared to
conventional type and oscillations are also decreased reaching to new operating point.
Keywords: Dc converters, Incremental conductance (IndCond) algorithm, Maximum power point tracking, Photovoltaic energy
conversion Year: 2016 | Tome: 61 | Issue: 2 | Pp.: 164-168
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