Comparative Study of Grid-Connected Multilevel Inverters for High Power Phtovoltaic Systems

Photovoltaic (PV) energy conversion becomes main focus of many researches due to its promising potential as energy source for clean electricity production. One of the important aspects that should be considered in PV application is the use of grid connected multilevel inverter. The Neutral Point Clamped Multilevel Inverter (NPC-MLI), the Flying Capacitor Multilevel Inverter (FC-MLI), and the Cascaded H-Bridge Multilevel Inverter (CHB-MLI) are the three widely used configurations of multilevel inverters. This paper presents the simulation and comparative analysis of the three topologies of three phase 3-level inverter. The multi-carrier sinusoidal pulse width modulation (SPWM) technology is used to realize the closed-loop control model of the photovoltaic grid-connected system. The output waveforms of multilevel inverters are presented and their comparison is based on the total harmonic distortion (THD) present in the output voltage. All topologies are simulated using MATLAB/Simulink in the same operating conditions.

[1]  Bo Li,et al.  Research of grid-connected photovoltaic inverter grid-connected system based on dual closed-loop of grid voltage vector orientation , 2017, 2017 Chinese Automation Congress (CAC).

[2]  B. Gayathri Devi,et al.  A brief survey on different multilevel inverter topologies for grid-tied solar photo voltaic system , 2017, 2017 IEEE International Conference on Smart Energy Grid Engineering (SEGE).

[3]  Bikram Das,et al.  Photovoltaic array based grid connected cascaded multilevel inverter using PR controller , 2017, 2017 Innovations in Power and Advanced Computing Technologies (i-PACT).

[4]  M.A. El-Shibini,et al.  Maximum power point tracking technique , 1989, Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',.

[5]  Gaurav Mishra,et al.  Simulation Model of a Three Phase Multilevel Inverter for a Grid Connected Photovoltaic System , 2015 .

[6]  Sanjay Bodkhe,et al.  A comparative analysis of classical three phase multilevel (five level) inverter topologies , 2016, 2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES).

[7]  Ahmad Maliki Omar,et al.  Modeling and simulation of Photovoltaic (PV) array and maximum power point tracker (MPPT) for grid-connected PV system , 2011, 2011 3rd International Symposium & Exhibition in Sustainable Energy & Environment (ISESEE).

[8]  Nakkireddyvari Bhargavi,et al.  Modular Cascaded H-Bridge Multilevel PV Inverter with Distributed MPPT for Grid-Connected Applications , 2016 .

[9]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[10]  D.Kavitha,et al.  Modeling of Diode Clamped Multilevel Inverter using Sinusoidal PWM , 2015 .

[11]  R Anguraja,et al.  PV Array with Cascaded Multilevel Inverter and Medium Frequency Transformer for Grid Connection , 2016 .

[12]  I. Kamwa,et al.  A comparative study of different multilevel converter topologies for high power photovoltaic applications , 2016, 2016 7th Power Electronics and Drive Systems Technologies Conference (PEDSTC).

[13]  Ahmed Abdalrahman,et al.  Simulation and Implementation of Grid-connected Inverters , 2012 .

[14]  R. Seyezhai,et al.  Comparative Study of Multicarrier PWM Techniques for a Modular Multilevel Inverter , 2013 .

[15]  Ramazan Bayindir,et al.  Review of multilevel voltage source inverter topologies and control schemes , 2011 .

[16]  Mohd Tariq,et al.  Comparative analysis of carrier schemes for PWM in multilevel PUC inverter for PV applications , 2016, 2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET).

[17]  Wanchai Subsingha,et al.  Design and Analysis Three Phase Three Level Diode-Clamped Grid Connected Inverter , 2016 .