| Type of Document |
Master's Thesis |
| Author |
Vulovic, Marko
|
| Author's Email Address |
mvulovic@vt.edu |
| URN |
etd-12032010-174203 |
| Title |
Digital Control of a High Frequency
Parallel Resonant DC-DC Converter |
| Degree |
Master of Science |
| Department |
Electrical and Computer Engineering |
| Advisory Committee |
| Advisor Name |
Title |
| Boroyevich, Dushan |
Committee Chair |
| Lee, Fred C. |
Committee Member |
| Mattavelli, Paolo |
Committee Member |
|
| Keywords |
- inductorless output filter
- DC-DC switching converter
- non resonant coupled
- gain scheduling
- parallel resonant converter
- high frequency digital control
|
| Date of Defense |
2010-11-05 |
| Availability |
unrestricted |
Abstract
A brief analysis of the nonresonant-coupled parallel resonant converter is performed. The converter is modeled and a reference classical analog controller is designed and simulated. Infrastructure required for digital control of the converter (including anti-aliasing filters and a modulator) is designed and a classical digital controller is designed and simulated, yielding a ~30% degradation in control bandwidth at the worst-case operating point as compared with the analog controller. Based on the strong relationship observed between low-frequency converter gain and operating point, a gain-scheduled digital controller is proposed, designed, and simulated, showing 4:1 improved worst-case control bandwidth as compared with the analog controller. A complete prototype is designed and built which experimentally validates the results of the gain-scheduled controller simulation with good correlation. The three approaches that were investigated are compared and conclusions are drawn. Suggestions for further research are presented.
|
| Files |
| Filename |
Size |
Approximate Download Time
(Hours:Minutes:Seconds)
|
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56K Modem |
ISDN (64 Kb) |
ISDN (128 Kb) |
Higher-speed Access |
| |
Vulovic_M_T_2010.pdf |
6.14 Mb |
00:28:26 |
00:14:37 |
00:12:47 |
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