Unipolar single reference multicarrier sinusoidal pulse width modulation based 7-level inverter with reduced number of semiconductor switches for renewable energy applications

Raj, Kiran; Mahajan, Sagar Bhaskar; Sanjeevikumar, Padmanaban; Frede, Blaabjerg; Pat, Wheeler; Muhammad H., Rashid

Abstract

In the present scenario of increasing power
demand and depletion of fossil fuel results in the research
advancements in the field of renewable energy sources. Among
various types of renewable energy sources, photovoltaic related
applications are gaining importance. DC-AC converters play a
very prominent role in photovoltaic system in efficient power
delivering for various applications. This paper proposed a 7-level
inverter with reduced number of switches for photovoltaic
applications. Unipolar Single Reference Multicarrier Sinusoidal
Pulse Width Modulation (U-SR-MC-SPWM) technique is used
for the purpose of gate pulse generation for the proposed
multilevel inverter. A comparative study of seven-level cascaded
multilevel inverter and a proposed multilevel inverter is carried
out. Simulation and power quality analyses of both multilevel
inverters are performed in MATLAB/Simulink platform version
2016(a). It is noticed that the total harmonic distortion is slightly
more of the proposed multilevel inverter when compared with
cascaded h-bridge inverter. But, with the reduction in the
number of power semiconductor switches in proposed multilevel
inverter overall switching power losses, circuit complexity, gate
driver requirements and cost of the system can be reduced. The
simulation results always show a good agreement with the
proposed approach.

Citation

Raj, K., Mahajan, S. B., Sanjeevikumar, P., Frede, B., Pat, W., & Muhammad H., R. (2018, August). Unipolar single reference multicarrier sinusoidal pulse width modulation based 7-level inverter with reduced number of semiconductor switches for renewable energy applications. Paper presented at IEEE-PEMC 2018 - 18th International Conference on Power Electronics and Motion Control

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: IEEE-PEMC 2018 - 18th International Conference on Power Electronics and Motion Control
• Start Date: Aug 26, 2018
• End Date: Aug 30, 2018
• Acceptance Date: May 4, 2018
• Deposit Date: Oct 2, 2018
• Publicly Available Date: Oct 3, 2018
• Book Title: NA
• Chapter Number: NA
• ISBN: NA
• Public URL: https://nottingham-repository.worktribe.com/output/1143706