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SYMMETRIC AND ASYMMETRIC DESIGN AND 
IMPLEMENTATION OF NEW CASCADED MULTILEVEL 
INVERTER TOPOLOGY 
ABSTRACT: 
Nowadays, use of multilevel inverters in high power applications clearly can be 
seen. High quality and lower distortion of the output voltage and low blocking voltage of 
semiconductor switches are being presented as the major privileges of the multilevel 
inverter compared to the traditional voltage source inverter. 
In this project, a new topology of multilevel inverter is proposed as fundamental 
block. The proposed topology is generalized using series connection of the fundamental 
blocks. The proposed multilevel inverter has been analyzed in both symmetric and 
asymmetric operation modes. A great perfection in voltage levels number with minimum 
switching devices has been obtained in both symmetric and asymmetric modes. 
Thereafter a detailed study of losses and Peak Inverse Voltage (PIV) of proposed 
multilevel inverter is given. Also in continue a comparison between proposed topology 
and the traditional one and a recently developed topology is carried out.
BLOCK DIAGRAM: 
Dc source MLI 
TOOLS AND SOFTWARE USED: 
 MP LAB 
 ORCAD/PSPICE 
 MATLAB/SIMULINK 
OUTPUT: 
 HARDWARE 
 SIMULATION 
Driver section 
Pic controller 
Output 
Dc source

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JPEEE1432 Symmetric and Asymmetric Design and Implementation of New Cascaded Multilevel Inverter Topology

  • 1. SYMMETRIC AND ASYMMETRIC DESIGN AND IMPLEMENTATION OF NEW CASCADED MULTILEVEL INVERTER TOPOLOGY ABSTRACT: Nowadays, use of multilevel inverters in high power applications clearly can be seen. High quality and lower distortion of the output voltage and low blocking voltage of semiconductor switches are being presented as the major privileges of the multilevel inverter compared to the traditional voltage source inverter. In this project, a new topology of multilevel inverter is proposed as fundamental block. The proposed topology is generalized using series connection of the fundamental blocks. The proposed multilevel inverter has been analyzed in both symmetric and asymmetric operation modes. A great perfection in voltage levels number with minimum switching devices has been obtained in both symmetric and asymmetric modes. Thereafter a detailed study of losses and Peak Inverse Voltage (PIV) of proposed multilevel inverter is given. Also in continue a comparison between proposed topology and the traditional one and a recently developed topology is carried out.
  • 2. BLOCK DIAGRAM: Dc source MLI TOOLS AND SOFTWARE USED:  MP LAB  ORCAD/PSPICE  MATLAB/SIMULINK OUTPUT:  HARDWARE  SIMULATION Driver section Pic controller Output Dc source