Photovoltaic inverter with smart grid functions

This contribution presents a smart power electronics injection system for grid-connected photovoltaic energy resources. The developed converter can not only inject the maximum active power as a typical inverter does, but also provide the active functions the Smart Grid scenario needs, including reactive power reference tracking for compensating purposes, node voltage regulation for helping the grid when there are undervoltages or overvoltages, grid harmonic distortion elimination due to non-linear loads and active power reference tracking with the addition of an energy storage system, based on ultracapacitors, for managing the discontinuities of the photovoltaic energy. The topology is composed by an inverter that interfaces the photovoltaic array with the grid and a bidirectional DC-DC converter for the energy storage. The control system is based on d-q current control theory guided by a reference power point tracking method. Simulation test bench has been developed with the objective of testing the control system.

[1]  M. A. Guerrero,et al.  Supercapacitors: Alternative Energy Storage Systems , 2009 .

[2]  Enrique Romero-Cadaval,et al.  Grid-connected photovoltaic power plants for helping node voltage regulation , 2015 .

[3]  Ali M. Eltamaly.  A novel harmonic reduction technique for controlled converter by third harmonic current injection , 2012, ICHQP 2012.

[4]  Enrique Romero-Cadaval,et al.  Grid-Connected Photovoltaic Generation Plants: Components and Operation , 2013, IEEE Industrial Electronics Magazine.

[5]  Enrique Romero-Cadaval,et al.  Generic Losses Model for Traditional Inverters and Neutral Point Clamped Inverters , 2014 .

[6]  Yu Yan,et al.  A distributed data storage and processing framework for next-generation residential distribution systems , 2014 .

[7]  A. Arabali,et al.  Optimal charging/discharging of grid-enabled electric vehicles for predictability enhancement of PV generation , 2014 .

[8]  Osama A. Mohammed,et al.  Real-time energy management scheme for hybrid renewable energy systems in smart grid applications , 2013 .

[9]  Xi Fang,et al.  3. Full Four-channel 6.3-gb/s 60-ghz Cmos Transceiver with Low-power Analog and Digital Baseband Circuitry 7. Smart Grid — the New and Improved Power Grid: a Survey , 2022 .

[10]  Paulo F. Ribeiro,et al.  Distributed generation support for voltage regulation: An adaptive approach , 2014 .

[11]  E. Romero-Cadaval,et al.  Three-phase single stage photovoltaic inverter with active filtering capabilities , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[12]  Enrique Romero-Cadaval,et al.  Comparison of two power flow control strategies for photovoltaic inverters , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[13]  Enrique Romero-Cadaval,et al.  PV Array Emulator for Testing Commercial PV Inverters , 2013 .

[14]  Fabricio Bradaschia,et al.  Two-stage converter with remote state pulse width modulation for transformerless photovoltaic systems , 2014 .

[15]  Pedro Rodríguez,et al.  Evaluation of Storage Energy Requirements for Constant Production in PV Power Plants , 2013, IEEE Transactions on Industrial Electronics.

[16]  Blas M. Vinagre,et al.  Phase Locked Loop for Distorted Three-Phase Systems tested with a PI, a PID and a Fractional PI , 2009 .

[17]  Josep M. Guerrero,et al.  A Survey on Control of Electric Power Distributed Generation Systems for Microgrid Applications , 2015 .

[18]  Rachid Cherkaoui,et al.  Preventive reactive power management for improving voltage stability margin , 2013 .