Design of a grid-connected photovoltaic inverter with maximum power point tracking using perturb and observe technique

There is no easy way to convert Photovoltaic (PV) energy with high efficiency due to dynamic changes in solar irradiance and temperature. This paper illustrates a control strategy to design and implementation of Maximum Power Point Tracking (MPPT) in a photovoltaic system using Perturb and Observe (PandO) algorithm. The PSIM simulation results confirm proper functioning of the proposed MPPT sub-circuit to achieve a constant 48V DC output from fluctuating voltage of solar panel by varying duty cycle of the MOSFET in the 24V-48V boost converter. The filtered output waveform of the SPWM driven H-bridge inverter via the L-C low pass filter is found to be a pure sine-wave of 48V peak which is then stepped-up 312V peak (220V rms) by using a step up transformer. The frequency of output voltage is found to be 50Hz with a total harmonic distortion (THD) of 0.001 which is much lower than the IEEE 519 standard.

[1]  M. T. Makhloufi,et al.  Maximum Power Point Tracker for Photovoltaic Systems using On-line Learning Neural Networks , 2013 .

[2]  P. B. Mahajan,et al.  MODELING OF PHOTOVOLTAIC MODULE , 2015 .

[3]  Nawrin Islam Natasha,et al.  Implementation of Maximum Power Point Tracking in a photovoltaic inverter using Incremental Conductance technique , 2014, 8th International Conference on Electrical and Computer Engineering.

[4]  Arasakumar Sangari,et al.  Analysis of Impedance Source Inverter Topologies for Grid Integration of PV Inverters , 2015 .

[5]  Marcelo Gradella Villalva,et al.  Modeling and circuit-based simulation of photovoltaic arrays , 2009, 2009 Brazilian Power Electronics Conference.

[6]  Sajib Chakraborty,et al.  Design of a transformer-less grid connected hybrid photovoltaic and wind energy system , 2014, 2014 9th International Forum on Strategic Technology (IFOST).

[7]  Ahmed Sony Kamal Chowdhury,et al.  Single-phase grid-tie photovoltaic inverter using maximum power point tracking with flyback converter , 2014, 2014 3rd International Conference on the Developments in Renewable Energy Technology (ICDRET).

[8]  Takahiko Iida,et al.  A TRANSFORMER-LESS SINGLE PHASE INVERTER USING A BUCK-BOOST TYPE CHOPPER CIRCUIT FOR PHOTOVOLTAIC POWER SYSTEM , 1998 .

[9]  Sajib Chakraborty,et al.  Design and Analysis of Transformerless Grid-Tie Buck-Boost Photovoltaic Inverter with Immittance Conversion Topology , 2014 .

[10]  J. A. Santiago-Gonzalez,et al.  Three phase induction motor drive using flyback converter and PWM inverter fed from a single photovoltaic panel , 2011, 2011 IEEE Power and Energy Society General Meeting.

[11]  Marcelo Gradella Villalva,et al.  Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays , 2009, IEEE Transactions on Power Electronics.

[12]  Athimulam Kalirasu,et al.  Simulation of closed loop controlled boost converter for solar installation , 2010 .

[13]  P.L. Chapman,et al.  Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques , 2007, IEEE Transactions on Energy Conversion.

[14]  R. O. Caceres,et al.  A boost DC-AC converter: analysis, design, and experimentation , 1999 .

[15]  F. Blaabjerg,et al.  Improved MPPT Algorithms for Rapidly Changing Environmental Conditions , 2006, 2006 12th International Power Electronics and Motion Control Conference.

[16]  Puneet Agarwal,et al.  Modified hill-top algorithm based maximum power point tracking for solar PV module , 2012, 2012 IEEE International Symposium on Industrial Electronics.

[17]  Zheng Zhao.  High Efficiency Single-stage Grid-tied PV Inverter for Renewable Energy System , 2012 .

[18]  Sajib Chakraborty,et al.  Design of a single stage grid-connected buck-boost photovoltaic inverter for residential application , 2014, 2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY.

[19]  Philip T. Krein,et al.  Photovoltaic converter module configurations for maximum power point operation , 2010, 2010 Power and Energy Conference At Illinois (PECI).

[20]  Sajib Chakraborty,et al.  Design of a Transformer-less Grid-Tie Inverter Using Dual-Stage Buck and Boost Converters , 2014 .