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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Performance Analysis of Three Level Inverter for L & LCL Filters Connected To Grid
Full Text(PDF, )  PP.755-761  
Mallikarjuna G D, Naik R L, Suresh H. Jangamshetti 
Diode-clamped inverter, multilevel inverter, Space vector PWM, Three-level inverter, L & LCL filters
Multilevel inverter technology has emerged recently as a very important alternative in the area of high-power medium-voltage energy control. In multi level inverters the most important topologies like diode-clamped inverters (neutral-point clamped), capacitor-clamped (flying capacitor), and cascaded multi cell with separate dc sources. Diode-clamped inverter results in the low frequency voltage ripple in the NP, which is the point between the two dc-link capacitors. This explores the fundamental limitations of the NP voltage balancing problem for different loading conditions of three-level voltage source converters. It also represents that the most relevant control and modulation methods developed for the space-vector modulation technique. Design of L and LCL filter is done for three level diode clamped inverter connected to grid. Three phase VSI are switched by these PWM pulses to improve the output waveforms of the three level diode clamped inverter connected to grid using filters. The procedure for designing an LCL-filter is proposed and verified by simulations. This paper proposed method PWM waveforms are generated by SVPWM technique using MATLAB/SIMULINK and L and LCL filter is designed connected to grid.
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