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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Morroni, J. Dolgov, A. Shirazi, M. Zane, R. Maksimovic, D. |
| Copyright Year | 2007 |
| Description | Author affiliation: Univ. of Colorado at Boulder Boulder, Boulder (Morroni, J.; Dolgov, A.; Shirazi, M.; Zane, R.; Maksimovic, D.) |
| Abstract | Spacecraft power systems and other mission- critical applications require robust power delivery systems. This paper focuses on two aspects of power converter health monitoring: detecting and analyzing loss-related and frequency response-related changes. Two hardware-efficient algorithms are discussed that can be implemented without any additional sensing points other than those required for operation of the converter and with minimal additional digital hardware. It is shown that available converter operating information can be processed to detect a significant (e.g. 2x) change in the power MOSFET $R_{ON}-$ In addition, a system identification-based approach with an additional digital pre-fllter is used to extract an accurate and useful frequency response of the converter despite large quantization noise caused by a low-resolution A/D converter. It is shown that this information can be used to accurately monitor the stability margins of the converter. The techniques are verified experimentally on a 90 W 50 V-15 V forward converter with FPGA control. |
| Starting Page | 112 |
| Ending Page | 118 |
| File Size | 397983 |
| Page Count | 7 |
| File Format | |
| ISBN | 9781424406548 |
| ISSN | 02759306 |
| DOI | 10.1109/PESC.2007.4341972 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Monitoring Digital control Digital-to-frequency converters Space vehicles Power system analysis computing Robustness Frequency conversion Change detection algorithms Hardware MOSFET circuits |
| Content Type | Text |
| Resource Type | Article |
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