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Impedance specifications for stable DC distributed power systems
Abstract
In a DC distributed power system, the interaction between individually designed power modules/subsystems may cause the instability of the whole system. In a small-signal sense, system level stability is determined by the impedance ratio Z/sub o//Z/sub i/. Here, Z/sub o/ is the output impedance of the source module/subsystem, and Z/sub i/ is the input impedance of the load module/subsystem. As a result, an effective way to prevent system instability is defining impedance specifications for modules/subsystems. This paper briefly summarizes existing works and introduces the authors' contribution in defining impedance specifications. A new forbidden region for impedance ratio Z/sub o//Z/sub i/ on the S-plane is proposed as the system stability margin requirement. Based on this proposed forbidden region, the impedance specifications of individual loads are established. Further, a very practical measurement approach is developed to examine whether or not the system stability margin requirement of the forbidden region is satisfied.
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Cited by
Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications
Li, W., & He, X. (2011) · IEEE Transactions on Industrial Electronics · doi:10.1109/tie.2010.2049715 · Cited by 1,423
Comprehensive Review of Stability Criteria for DC Power Distribution Systems
Riccobono, A., & Santi, E. (2014) · IEEE Transactions on Industry Applications · doi:10.1109/tia.2014.2309800 · Cited by 459
A Switched-Capacitor-Based Active-Network Converter With High Voltage Gain
Tang, Y., Wang, T., & He, Y. (2014) · IEEE Transactions on Power Electronics · doi:10.1109/tpel.2013.2272639 · Cited by 317
Metadata
- Authors
- Feng, X., Liu, J., & Lee, F. C.
- Venue
- IEEE Transactions on Power Electronics
- Published
- 2002-03
- Volume
- 17
- Issue
- 2
- Pages
- 157-162
- ISSN
- 0885-8993 (ISSN-L)
- 1941-0107
- OpenAlex
- W2149853981
- Cited by
- 582
- References
- 0
- FWCI
- 4.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- Feng, X., Liu, J., & Lee, F. C. (2002). Impedance specifications for stable DC distributed power systems. IEEE Transactions on Power Electronics. https://doi.org/10.1109/63.988825
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