Title page for ETD etd-4198-143730


Type of Document Dissertation
Author Chen, Wei
Author's Email Address wchen@vt.edu
URN etd-4198-143730
Title Low Voltage High Current Power Conversion with Integrated Magnetics
Degree PhD
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Lee, Fred C. Committee Chair
Borojevich, Dushan Committee Member
Chen, Dan Y. Committee Member
Jovanovic, Milan M. Committee Member
Nelson, Douglas J. Committee Member
Keywords
  • power converter
  • integrated magnetics
Date of Defense 1998-04-27
Availability unrestricted
Abstract
Very low voltage, high current output requirement have

necessitated improvements in power supply's density and

efficiency. Existing power conversion techniques cannot

meet very stringent size and efficiency requirements.

By applying the proposed magnetic integration procedure,

new integrated magnetic circuits featuring low loss, simple

structure, and ripple cancellation technique are then

developed to overcome the limitations of prior art. Both

cores and windings are integrated. Consequently, the power

loss and the size of the integrated magnetic device are

greatly reduced. Detailed analysis and design

considerations of the proposed circuits are presented.

As a result of applying the proposed technique, very

high density, high efficiency, low voltage, high current

power modules were developed. A typical example features

an isolated 3.3V/30A power module with a power density of

130W/in3 and an efficiency of 90% at 500 KHz switching

frequency.

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  Appendices.pdf 212.22 Kb 00:00:58 00:00:30 00:00:26 00:00:13 00:00:01
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  ch7.pdf 28.00 Kb 00:00:07 00:00:04 00:00:03 00:00:01 < 00:00:01
  frontmatter.pdf 33.16 Kb 00:00:09 00:00:04 00:00:04 00:00:02 < 00:00:01
  reference.pdf 23.73 Kb 00:00:06 00:00:03 00:00:02 00:00:01 < 00:00:01
  VITA.pdf 4.50 Kb 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01

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