Comparison Between PWM and SVPWM Three-Phase Inverters in Industrial Applications

<p>Two different three-phase inverters are introduced and compared showing the differences and similarities between them in terms of output power, implementation, challenges and efficiency. Both inverters use the same feedback controller and both have the same input voltage and the same load levels.</p><p>The first inverter is a three-phase sinusoidal pulse width modulation (PWM) inverter that generates gate-control signals using a sinusoidal wave source. It is shown that pulse width modulation utilizes a simpler approach to convert DC power into AC.</p><p>The second inverter is a three-phase space vector pulse width modulation (SVPWM) inverter. SVPWM inverters utilize a space vector (reference vector) to create the desired sinusoidal waves. SVPWM proved to have less total harmonic distortion (THD% = 1.15%) and faster response time (114ms) with an output error of 0.13V. this compares with a sinusoidal PWM (THD% = 3.73%, response time = 136ms and output error = 0.23V). SVPWM proves to have better overall performance.</p><p>MATLAB’s Simulink is used to build and test the performances of each inverter and then compare the inverters with a pre-existing three-phase grid.</p>

Name thesis:degree_name

Master of Science in Engineering

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Rayen School of Engineering

Grantor dc:publisher

Youngstown State University

Year dc:date

2012

Author dc:creator

• Nusair, Ibrahim Rakad

Contributors dc:contributor

• Jalali, Jalal

• Electrical Engineering
• Engineering
• three-phase inverters
• PWM
• SVPWM
• space vector pulse width modulation
• pulse width modulation
• converters

Statement dc:rights

• unrestricted
• This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.

Language dc:language

English

Repository record dc:identifier

http://rave.ohiolink.edu/etdc/view?acc_num=ysu1355949821

OAI identifier oai:identifier

oai:etd.ohiolink.edu:ysu1355949821