Int. J. Smart Grid and Green Communications, Vol. 1, No. 4, 2018 275 Copyright © 2018 Inderscience Enterprises Ltd. Active and reactive power control of three phase grid connected PV system Pradipta Kumar Sahoo Department of Electrical Engineering, Trident Academy of Technology, Bhubaneswar, India Email: sahoopradipta67@yahoo.com Pravat Kumar Ray* Department of Electrical Engineering, National Institute of Technology Rourkela, India Email: rayp@nitrkl.ac.in *Corresponding author Pranati Das Department of Electrical Engineering, Indira Gandhi Institute of Technology, Sarang, India Email: daspranati@yahoo.co.in Abstract: This paper deals with active and reactive power control of a three phase grid connected photovoltaic system. Maximum power point tracking (MPPT) algorithm is used to track the MPP. The MPPT algorithm uses the I PV and V PV of the PV array and gives the MPP and a V dc,ref . This voltage is then passed on to the inverter and then further to the three-phase grid. The behaviour of the active and reactive power of the grid which is supplied by the PV array is investigated. The various currents such as inverter current, grid current and load currents are also investigated. MATLAB/simulink has been used to carry out the simulations. The proposed work has also been experimentally verified. Keywords: photovoltaic; instantaneous reactive power theory; maximum power point tracking; MPPT; voltage source inverter; hysteresis band controller. Reference to this paper should be made as follows: Sahoo, P.K., Ray, P.K. and Das, P. (2018) ‘Active and reactive power control of three phase grid connected PV system’, Int. J. Smart Grid and Green Communications, Vol. 1, No. 4, pp.275–291. Biographical notes: Pradipta Kumar Sahoo received his BE in Electrical Engineering from the Indira Gandhi Institute of Technology Sarang, Odisha, India, in 1990 and ME in Electrical Engineering from the Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India, in 1992.