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Three-phase power conversion using soft-switching PWM techniques

This dissertation addresses several key issues related to high-frequency soft-switching PWM three-phase power converters. These are:

1. Analysis, synthesis, and design of three-phase soft-switching PWM power converter topologies
2. Design of input EMI filters for three-phase converters
3. Design of microprocessor controllers for three-phase converters.

An analysis of existing soft-switching PWM techniques is performed, and two generalized soft-switching PWM converter circuit representations are derived.

Based on these representations and common topological properties of three-phase and dc-dc PWM converters, two new procedures for synthesis of three-phase soft-switching PWM converters are derived. The two procedures are used to synthesize five new three-phase soft-switching PWM converter topologies suitable for wide range of applications.

A digital signal processor-based controller implementation example is presented. It demonstrates the feasibility of producing versatile, high performance, reliable, low-cost digital controllers for soft-switching PWM three-phase power converters operating at high switching frequencies.

A new approach to the design of input filters for ac power electronic circuits is presented here. This approach is based on the application of a vast body of knowledge about passive L-C filters that has existed for many years, but has not been used in power electronics. New passive and active filter pole damping schemes are applied to high-order elliptic filters, resulting in significant filter size reduction compared to the standard filter designs. / Ph. D.

Identiferoai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/40059
Date21 October 2005
CreatorsVlatkovic, Vlatko
ContributorsElectrical Engineering, Chen, Dan Y., Baumann, William T., Klaus, Martin, Lee, Fred C., Borojević, Dušan
PublisherVirginia Tech
Source SetsVirginia Tech Theses and Dissertation
LanguageEnglish
Detected LanguageEnglish
TypeDissertation, Text
Formatxiii, 224 leaves, BTD, application/pdf, application/pdf
RightsIn Copyright, http://rightsstatements.org/vocab/InC/1.0/
RelationOCLC# 32772573, LD5655.V856_1994.V538.pdf

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