State feedback control of a three level grid-connected photovoltaic inverter

In this paper, the state Feedback Linearization Control technique is applied for controlling the power factor of a grid-connected three level photovoltaic inverter. This technique transforms the nonlinear state model of the three level inverter, in the d-q reference frame, into two equivalent linear subsystems, and then applies a pole placement linear control loops on this subsystem in order to separately control the grid power factor and the dc link voltage of the inverter. The control system includes also a Maximum Power Point Tracker (MPPT) that allows extraction of maximum available power from the photovoltaic (PV) array.

[1]  A. Messai,et al.  FPGA-based real time implementation of MPPT-controller for photovoltaic systems , 2011 .

[2]  Vivek Agarwal,et al.  New current control based MPPT technique for single stage grid connected PV systems , 2007 .

[3]  A. Mellit,et al.  Input output feedback linearization control and variable step size MPPT algorithm of a grid-connected photovoltaic inverter , 2011 .

[4]  M. E. Ropp,et al.  Comparative study of maximum power point tracking algorithms , 2003 .

[5]  Adel Mellit,et al.  Performance prediction of 20 kWp grid-connected photovoltaic plant at Trieste (Italy) using artificial neural network , 2010 .

[6]  Moncef Jraidi,et al.  New control strategy for 2-stage grid-connected photovoltaic power system , 2008 .

[7]  Roberto González,et al.  Transformerless Single-Phase Multilevel-Based Photovoltaic Inverter , 2008, IEEE Transactions on Industrial Electronics.

[8]  E.M. Berkouk,et al.  Self balancing of DC link capacitor voltages using redundant vectors for SVPWM controlled five-level inverter , 2008, 2008 5th International Multi-Conference on Systems, Signals and Devices.

[9]  Andres Barrado,et al.  Review of the maximum power point tracking algorithms for stand-alone photovoltaic systems , 2006 .

[10]  A. Isidori.  Nonlinear Control Systems , 1985 .

[11]  M. Sumner,et al.  Evaluation of Three-Phase Transformerless Photovoltaic Inverter Topologies , 2007, IEEE Transactions on Power Electronics.

[12]  P.E. Mercado,et al.  Modeling and control of grid-connected photovoltaic energy conversion system used as a dispersed generator , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America.