Low-power home PV systems with MPPT and PC control modes

This paper presents a new control technique for low-power grid-connected photovoltaic (PV) inverters. This device is intended to be a non-expensive solution; it connects directly to a smart meter and does not consider any energy storage device. In this project, the goal is to assure that no power is injected in the electrical grid, due to legal restrictions. Hence, the power produced by the PV panel can never be higher than consumed power. In order to accomplish this objective, two control methods will be used: Maximum Power Point Tracking (MPPT) mode and Power Control (PC) mode. The MPPT mode will be active when the consumed power is higher than the PV maximum available power and the PC mode will be active when the consumed power is lower than the PV maximum available power. In addition, the controller will also decide on which control mode should be active, given the consumed power of the moment.

[1]  F. Blaabjerg,et al.  Control of single-stage single-phase PV inverter , 2006, 2005 European Conference on Power Electronics and Applications.

[2]  Jan T. Bialasiewicz,et al.  Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey , 2006, IEEE Transactions on Industrial Electronics.

[3]  Kamala Kanta Mahapatra,et al.  PI and fuzzy logic controllers for shunt Active Power Filter--a report. , 2012, ISA transactions.

[4]  Remus Teodorescu,et al.  A New Single-Phase PLL Structure Based on Second Order Generalized Integrator , 2006 .

[5]  Jeyraj Selvaraj,et al.  Multilevel Inverter For Grid-Connected PV System Employing Digital PI Controller , 2009, IEEE Transactions on Industrial Electronics.

[6]  Kamalakanta Mahapatra,et al.  Erratum to “PI and fuzzy logic controllers for shunt active power filter—A report” [Isa Transactions 51, 163–169] , 2012 .

[7]  M. Mohapatra,et al.  Fixed and sinusoidal-band hysteresis current controller for PWM voltage source inverter with LC filter , 2010, 2010 IEEE Students Technology Symposium (TechSym).

[8]  Henry Shu-Hung Chung,et al.  An integrated inverter with maximum power tracking for grid-connected PV systems , 2005 .

[9]  Tsutomu Hoshino,et al.  Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions , 1995 .

[10]  Dr. Edward Kern,et al.  Cost Reduction and Manufacture of the SunSine ® AC Module Phase I Annual Report 21 April 1998 31 October 1999 National Renewable Energy Laboratory 1617 , 2000 .

[11]  Saad Mekhilef,et al.  Comparison study of maximum power point tracker techniques for PV systems , 2010 .