Journal of Power and Energy Engineering

Volume 8, Issue 3 (March 2020)

ISSN Print: 2327-588X   ISSN Online: 2327-5901

Google-based Impact Factor: 0.88  Citations  

Simulation of Seven and Nine Level CHBMLI with Elliptical Phase Disposition PWM Technique

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DOI: 10.4236/jpee.2020.83004    181 Downloads   363 Views   Citations


Electric vehicles are in demand in recent days due to depleting conventional energy resources. Electric vehicles which are environmental friendly are set to increase on road in coming days. The Electric vehicles which consist of electric drive systems are made up of electric motors, inverters and batteries. There is a need to increase their output quality while decreasing their size and cost. The multilevel inverter plays a vital role in improving the quality of the output voltage of the inverter. This paper presents the implementation of Elliptical Phase Disposition Pulse Width Modulation (EPD PWM) technique for higher level of Cascaded H-Bridge Multi Level Inverter (CHBMLI). The performance of 5, 7 and 9-level CHBMLI with proposed EPD PWM scheme is analyzed for three-phase RL-load. The simulation results prove that the voltage %THD reduces from 28.09 to 12.85 to 9.69 and current %THD reduces from 25.58 to 10.22 to 9.42 as the number of inverter output level increases from 5-7-9 level respectively. The simulation is carried out on MATLAB/ SIMULINK platform and the results were compared with conventional method to validate the proposed scheme. The simulation results prove that the novel EPD-PWM technique can be used to effectively control the CBHMLI.

Cite this paper

 , C. , Shivaleelavathi, B. and Yatnalli, V. (2020) Simulation of Seven and Nine Level CHBMLI with Elliptical Phase Disposition PWM Technique. Journal of Power and Energy Engineering, 8, 49-63. doi: 10.4236/jpee.2020.83004.

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