Reconfiguration of a Multilevel Inverter with Trapezoidal Pulse Width Modulation

Nataraj Prabaharan, V. Arun, Padmanaban Sanjeevikumar, Lucian Mihet-Popa and Frede Blaabjerg
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Nataraj Prabaharan: School of Electrical and Electronics Engineering, Department of Electrical and Electronics Engineering, SASTRA Deemed University, Thanjavur 613401, Tamil Nadu, India
V. Arun: Department of Electrical and Electronics Engineering, Sri Vidyanikethan Engineering College, Tirupathi 517102, Andhra Pradesh, India
Padmanaban Sanjeevikumar: Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark
Lucian Mihet-Popa: Faculty of Engineering, Østfold University College, Kobberslagerstredet 5, 1671 Kråkeroy, Norway
Frede Blaabjerg: Center of Reliable Power Electronics (CORPE), Department of Energy Technology, Aalborg University, Pontoppidanstræde 101, 9220 Aalborg, Denmark

Energies, 2018, vol. 11, issue 8, 1-18

Abstract: This paper presents different multi-carrier unipolar trapezoidal pulse width modulation strategies for a reduced switch asymmetrical multilevel inverter. The different strategies are phase disposition, alternative phase opposition and disposition, and carrier overlapping and variable frequency that involve triangular waves as carriers with a unipolar trapezoidal wave as a reference. The reduced switch, asymmetrical multilevel inverter operation was examined for generating the seven-level output voltage using Matlab/Simulink 2009b and the results were verified with a real-time laboratory-based experimental setup using a field-programmable gate array. Different parameter analyses, such as total harmonic distortion, fundamental root mean square voltage, and distortion factor, were analyzed with different modulation indices to investigate the performance of the selected topology. Unipolar trapezoidal pulse width modulation provides a higher root mean square voltage value.

Keywords: multilevel inverter; multi-carrier pulse width modulation; FPGA; trapezoidal pulse width modulation; inverter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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