Artificial Intelligent Systems and Machine Learning

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Cascaded H-Bridge Multilevel Inverter Using Multi Winding Transformer and Single DC Input with Single Carrier Sinusoidal PWM Control


Affiliations
1 Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar-626115, Tamilnadu, India
2 Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar - 626115, Tamilnadu, India
3 Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar 626115, Tamilnadu, India
4 Department of Electrical and Electronics Engineering, Sudharsan Engineering College, Sathiyamangalam-622501, Tamilnadu, India
     

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This paper proposes single carrier sinusoidal PWM based cascaded H-bridge multilevel inverter which employs single dc input power source with isolated unequal turns ratio low-frequency power transformers. Generally cascaded H-Bridge inverters are used to generate levels under trinary fashion switching scheme, where, n represents the number of H-Bridges used. In this topology three H-Bridges are used and hence 27 levels are achieved with single DC input and multi winding transformer unit. Hence harmonics are reduced in the output level. Therefore, an economical and efficient inverter can be designed. In this proposed topology trinary switching pattern is used to achieve the desired levels. Single carrier sinusoidal modulation (SC-SPWM) technique is used which provides variable voltage and a variable frequency supply. The effectiveness of the system is verified through simulation using MATLAB/Simulink.


Keywords

Cascaded H-Bridge Multilevel Inverter, SC-SPWM, Unequal Turns Ratio Transformer.
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  • Cascaded H-Bridge Multilevel Inverter Using Multi Winding Transformer and Single DC Input with Single Carrier Sinusoidal PWM Control

Abstract Views: 469  |  PDF Views: 3

Authors

G. Soundradevi
Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar-626115, Tamilnadu, India
M. Santhi
Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar - 626115, Tamilnadu, India
J. Rahila
Department of Electrical and Electronics Engineering, Sethu Institute of Technology, Virudhunagar 626115, Tamilnadu, India
A. Kannabhiran
Department of Electrical and Electronics Engineering, Sudharsan Engineering College, Sathiyamangalam-622501, Tamilnadu, India

Abstract


This paper proposes single carrier sinusoidal PWM based cascaded H-bridge multilevel inverter which employs single dc input power source with isolated unequal turns ratio low-frequency power transformers. Generally cascaded H-Bridge inverters are used to generate levels under trinary fashion switching scheme, where, n represents the number of H-Bridges used. In this topology three H-Bridges are used and hence 27 levels are achieved with single DC input and multi winding transformer unit. Hence harmonics are reduced in the output level. Therefore, an economical and efficient inverter can be designed. In this proposed topology trinary switching pattern is used to achieve the desired levels. Single carrier sinusoidal modulation (SC-SPWM) technique is used which provides variable voltage and a variable frequency supply. The effectiveness of the system is verified through simulation using MATLAB/Simulink.


Keywords


Cascaded H-Bridge Multilevel Inverter, SC-SPWM, Unequal Turns Ratio Transformer.