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A DSP-based regular sampled pulsewidth modulation (PWM) technique for a multilevel inverter

Ahmad Azli, Naziha and Bakar, Mohd Shafie (2004) A DSP-based regular sampled pulsewidth modulation (PWM) technique for a multilevel inverter. In: 2004 International Conference on Power System Technology - POWERCON, Vols 1 and 2. IEEE, USA, pp. 1613-1618. ISBN 0-7803-8610-8

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Abstract

Implementation of a regular sampled PWM technique based on a single carrier multilevel modulation strategy on a multilevel inverter using a digital signal processor (DSP) is presented in this paper. The equations representing the leading edges of the PWM pulses for the multilevel inverter are utilized in generating the gating signals for the multilevel inverter power devices using a dSPACE DS1102 controller board. Two types of the DS1102 controller board implementation are presented. The first type involves the development of Matlab/Simulink blocks that models a PWM signal generator and used in conjunction with Matlab/real-time workshop and dSPACE/real-time interface to actually generate the signals. The other type involves hand-coding (writing of a C program) with algorithms designed to generate PWM signals using the DS1102 controller board. Results based on both types of the DS1102 controller board implementation are compared and analysed. The performance of the multilevel inverter employing the later is also evaluated in terms of its output voltage waveforms and harmonic spectrums with variations in the modulation index.

Item Type:Book Section
Additional Information:ISBN: 0-7803-8610-8 International Conference on Power System Technology (POWERCON 2004); 21-24 Nov. 2004, Singapore.
Uncontrolled Keywords:PWM invertors, digital signal processing chips, mathematics computing, power engineering computing, DS1102 controller board, DSP, Matlab-Simulink, Matlab-real-time workshop, PWM signal generator, dSPACE-real-time interface, digital signal processor, gating signals, harmonic spectrums, modulation index, multilevel inverter, multilevel modulation strategy, power devices, pulsewidth modulation, voltage waveforms
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:7534
Deposited By: Norhafizah Hussin
Deposited On:08 Jan 2009 03:23
Last Modified:09 Mar 2011 04:17

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