A Novel and Universal Pulse Width Modulation Technique for Cascaded Multilevel Inverters

V. Kumar Chinnaiyan*, Jovitha JeromeJ**, J. Karpagam***
* Assistant Professor, Department of EEE , Bannari Amman Institute of Technology, Sathyamangalam, India.
** Professor and Head, Department of Instrumentation and Control Engineering, PSG College of Technology, Coimbatore, India.
***Assistant Professor, Department of Electrical and Electronics Engineering, Bannari Amman Institute of Technology, Sathyamangalam, India.
Periodicity:April - June'2009
DOI : https://doi.org/10.26634/jee.2.4.216

Abstract

A Space Vector Pulse Width Modulation (SVPWM) scheme for cascaded multilevel inverters is proposed in this paper. The proposed PWM scheme generates the inverter leg switching times, from the sampled reference phase voltage amplitudes and centres the switching times for the middle vectors, in a sampling interval, as in the case of conventional space vector PWM (SVPWM). The SVPWM scheme, presented for diode clamped multilevel inverters, can also work in the over modulation range, using only the sampled amplitudes of reference phase voltages. The present PWM technique does not involve any sector identification and considerably reduces the computation time when compared to the conventional space vector PWM technique. The present PWM signal generation scheme can be used for any multilevel inverter configuration.

Keywords

Cascaded Multilevel Inverter, THD, Sine Pulse Width Modulation, Space Vector Pulse Width Modulation

How to Cite this Article?

V. Kumar Chinnaiyan, Jovitha Jeromeand and J. Karpagam (2009). A Novel And Universal Pulse Width Modulation Technique For Cascaded Multilevel Inverters. i-manager’s Journal on Electrical Engineering, 2(4), Apr-Jun 2009, Print ISSN 0973-8835, E-ISSN 2230-7176, pp. 8-15. https://doi.org/10.26634/jee.2.4.216

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