Dissertation
Modeling and analysis of information-embedded power electronic converter systems
Doctor of Philosophy (Ph.D.), Drexel University
May 2017
DOI:
https://doi.org/10.17918/etd-7552
Abstract
At present, power electronic converters are widely used in systems such as shipboard power systems, distributed generation systems and DC microgrids. These devices allow for direct and fast control of the system states: voltages and currents. This is a desirable characteristic, especially when considering smart grid applications. However, the rise in the number of such devices connected to the grid, adds to the inherent nonlinearity of the power system leading to phenomena such as bifurcation and chaos. Further complications arise due to the interactions between the power system and the communication system; two systems that have been historically considered as detached from one another. Due to the growing incentives for smart grid development, the interdependence of these two systems must be recognized and incorporated into existing power electronic converter system models. This work presents models for DC-DC converter systems inclusive of both power system variables and information variables. The effects of network delay on the steady-state and dynamic stability of the overall information-embedded power electronic converter system are analyzed and quantified through proposed metrics. Additionally, uncertainty is introduced into the system model in the form of perturbations in network delay, the effects of which on system stability as well as the first exit times are investigated.
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Details
- Title
- Modeling and analysis of information-embedded power electronic converter systems
- Creators
- Sachi Nisansala Jayasuriya - DU
- Contributors
- Karen Nan Miu (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- xxiv, 196 pages
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Electrical (and Computer) Engineering (1970-2026); Drexel University
- Other Identifier
- 7552; 991014632605804721