A Novel Three-Phase Multilevel Inverter Using Less Number of Switches
Neelesh Kumar1, Sanjeev Gupta2, S.P.Phulambrikar3
1Neelesh Kumar, Electrical Engineering Department, SATI, Vidisha, India.
2Sanjeev Gupta, Electrical Engineering Department, SATI, Vidisha, India.
3S.P. Phulambrikar, Electrical Engineering Department, SATI, Vidisha, India.
Manuscript received on March 12, 2013. | Revised Manuscript received on April 17, 2013. | Manuscript published on April 30, 2013. | PP: 157-160 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1250042413/2013©BEIESP

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Abstract: A novel three phase multilevel inverter with a small number of switching devices is proposed. Large electrical drives and utility application require advanced power electronics converter to meet the high power demands. As a result, multilevel power converter structure has been introduced as an alternative in high power and medium voltage situations. A multilevel converter not only achieves high power rating but also improves the performance of the whole system in terms of harmonics. In this paper the proposed inverter can output more numbers of voltage levels with reduced number of switches as compared to cascade H-bridge inverter, which results in reduction of installation cost and have simplicity of control system. Finally, the simulation and experimental results validate the concept of this new topology.
Keywords: PWM, SPWM, Cascade H-bridge(CHB), matlab simulation, multilevel inverter.