Reactive Power Controller Design for Single- Phase Grid- Connected Photovoltaic Systems
Ehsan Rezapour1, Md. Tavakoli Bina2, Amin Hajizadeh3
1Ehsan Rezapour, Department Of Electrical Engineering, Islamicazad University, Damghanbranch, Damghan, Iran.
2Mohammad Tavakoli Bina, Department Of Electrical Engineering, Islamicazad University, Damghanbranch, Damghan, Iran.
3Amin Hajizadeh, Department Of Electrical Engineering, Islamicazad University, Damghanbranch, Damghan, Iran
Manuscript received on March 11, 2014. | Revised Manuscript received on March 15, 2014. | Manuscript published on March 25, 2014. | PP:22-24 | Volume-2 Issue-5, March 2014. | Retrieval Number: E0674032514/2014©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Lack of adequate transmission capacity is a major impediment in connecting more of renewable energy sources (wind, solar) into the transmission grid.This paper at first presents a control algorithm for a single-phase grid-connected photovoltaic system in which aninverter designed for gridconnected photovoltaic arrays can synchronize a sinusoidal current output with a voltage grid. The power provided by the PV panels is controlled by a Maximum Power Point Tracking (MPPT) algorithm based on the incremental conductance method specifically modified to control the phase of the PV inverter voltage. The controller feeds maximum active power intogrid at unity power factor, whereas it also allows the adjustment of reactive power injected into the grid. Simulation results show that the control system has good performances.
Keywords: Grid connected, photovoltaic system, reactive power,MPTT Algorithm