Comparative efficiency study of single phase photovoltaic grid connected inverters using PLECS®

Global warming is already having significant and costly effects on our communities, our health, and our climate. Nowadays, In developing countries (G20) around the world, decisions are being considered and a shifting of our dependence from fossil fuels to renewable energy sources (RES). Among RES solar energy, specially photovoltaic system (PV) play a key role in this challenge, thus, this paper provides a comparative study on the performances of three transformer-less inverters for photovoltaic applications (H-Bridge, H5, HERIC and NPC inverters) in terms of power losses, considering the use of different kinds of switches. Silicon (Si) and Silicon Carbide (SiC) diodes have been combined with two topologies of IGBTs in the performed tests. Simulation results have been obtained for each of the systems in different operating conditions by using PLECS software. Power losses and European Efficiency (EE) have been calculated for all the topologies, taking into account the real characteristics of the switches by using the thermal models provided by the software library.

[1]  Z.D. Far,et al.  Introduction and evaluation of novel multi-level carrier-based PWM strategies using a generalized algorithm , 2007, 2007 European Conference on Power Electronics and Applications.

[2]  Alvaro Luna,et al.  Losses and CMV evaluation in transformerless grid-connected PV topologies , 2009, 2009 IEEE International Symposium on Industrial Electronics.

[3]  Pekik Argo Dahono,et al.  An LC filter design method for single-phase PWM inverters , 1995, Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95.

[4]  A. Rabhi,et al.  Real-time model base fault diagnosis of PV panels using statistical signal processing , 2013, 2013 International Conference on Renewable Energy Research and Applications (ICRERA).

[5]  Alvaro Luna,et al.  Intelligent voltage control in a DC micro-grid containing PV generation and energy storage , 2014, 2014 IEEE PES T&D Conference and Exposition.

[6]  Abdelhamid Rabhi,et al.  Real Time Modeling of Triple layers Amorphous Photovoltaic Panels , 2012 .

[7]  A. Rabhi,et al.  Real-time diagnosis of PV system by using the Sequential Probability Ratio Test (SPRT) , 2014, 2014 16th International Power Electronics and Motion Control Conference and Exposition.

[8]  U. Drofenik,et al.  A General Scheme for Calculating Switching- and Conduction-Losses of Power Semiconductors in Numerical Circuit Simulations of Power Electronic Systems; International Power Electronics Conference; ; IPEC-Niigata 2005 , 2005 .

[9]  Iván Patrao,et al.  Transformerless topologies for grid-connected single-phase photovoltaic inverters , 2011 .

[10]  A. Rabhi,et al.  New method for fault detection of PV panels in domestic applications , 2013, 3rd International Conference on Systems and Control.

[11]  G.B. Gharehpetian,et al.  Modeling of switching and conduction losses in three-phase SPWM VSC using switching function concept , 2005, 2005 IEEE Russia Power Tech.

[12]  Jakub Dawidziuk.  Power Losses in PWM Inverters using Silicon Carbide Devices , 2012 .

[13]  Rob Nash,et al.  Conduction and switching loss comparison between an IGBT/Si-PiN diode pair and an IGBT/SiC-Schottky diode pair , 2011, 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies.

[14]  A. Rabhi,et al.  Partial shading fault diagnosis in PV system with discrete wavelet transform (DWT) , 2014, 2014 International Conference on Renewable Energy Research and Application (ICRERA).

[15]  R. Teodorescu,et al.  PV inverter test setup for European efficiency, static and dynamic MPPT efficiency evaluation , 2008, 2008 11th International Conference on Optimization of Electrical and Electronic Equipment.

[16]  Dong-Seok Hyun,et al.  The analysis of conduction and switching losses in multi-level inverter system , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[17]  M. Braun,et al.  REACTIVE POWER SUPPLIED BY PV INVERTERS - COST-BENEFIT-ANALYSIS , 2007 .

[18]  Abdelhamid Rabhi,et al.  Comprehensive Modulation and Classification of Faults and Analysis Their Effect in DC Side of Photovoltaic System , 2013 .

[19]  Abdelhamid Rabhi,et al.  Improved Real Time Amorphous PV Model for Fault Diagnostic Usage , 2013 .

[20]  P. Sanchis,et al.  Transformerless Inverter for Single-Phase Photovoltaic Systems , 2007, IEEE Transactions on Power Electronics.

[21]  Peter Zacharias,et al.  Highly Efficient Single-Phase Transformerless Inverters for Grid-Connected Photovoltaic Systems , 2010, IEEE Transactions on Industrial Electronics.