Paper Info
Title
A Hybrid Multilevel Inverter Topology With Third Harmonic Injection For Grid Connected Photovoltaic Central Inverters
Abstract
A three phase hybrid multilevel inverter topology is proposed for grid integrated photovoltaic central inverter systems. This topology is a hybrid of cascaded H bridge topology (CHB) and neutral point clamped (NPC) topology. The inverter uses asymmetric structure of dc bus voltage to increase the number of levels of the inverter. Third harmonic injection is proposed in order to have better utilization of the dc bus and to obtain higher number of levels. Nearest voltage level control is adapted as modulation technique to have good dynamic performance with less computational burden. A 29-level MATLAB/Simulink model of the inverter is developed to verify the performance of the proposed topology. The simulation uses only two H-bridges per phase and one three phase NPC (three-level) inverter to obtain 29 levels in line-to-line voltage. The objective of the work is: Reduction of number of switching devices, system (converter and controller) cost, EMI problem, device losses, and increasing the dynamic performance and efficiency. The proposed topology and its control are simulated using MATLAB/SIMULINK and confirmed through prototype experimentation in the laboratory.
Year
DOI
Venue
2012
10.1109/ISIE.2012.6237353
2012 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)
Keywords
Field
DocType
Hybrid multilevel inverter topology, grid connected photovoltaic system, third harmonic injection, nearest voltage level control, asymmetric multilevel inverter
Grid-connected photovoltaic power system,Control theory,Control engineering,Electronic engineering,Photovoltaic system,Inverter,Topology,Control theory,DC-BUS,Grid-tie inverter,Three-phase,H bridge,Engineering
Conference
Citations 
PageRank 
References 
2
0.43
5
Authors
3
Name
Order
Citations
PageRank
Sumit K. Chattopadhyay142.50
Chandan Chakraborty253750.60
Bikash C. Pal3277.90