The objective of the proposed research is 1) to develop a general dynamic condition sufficient to ensure frequency synchronization of inverter-based AC power networks, and 2) to develop a distributed control regime that is capable of guaranteeing that the above condition holds for a scalable class of such networks. I will first develop a structure-preserving model of an arbitrary network whose sources are all inverters operating frequency-droop control. By applying graph theoretic methods to the model, I will show that there exists a “safe operating region” of the state space such that if the network angle trajectory stays in this region, then frequency synchronization is shown by Lyapunov-like methods. By analogy to similar problems solved in other applications, I will develop a new distributed control regime to constrain a network of the target class to the safe operating region, thus guaranteeing frequency synchronization. These techniques may form the basis for future development of ultra-reliable, scalable inverter-based networks.
| Identifer | oai:union.ndltd.org:GATECH/oai:smartech.gatech.edu:1853/53985 |
| Date | 21 September 2015 |
| Creators | Ainsworth, Nathan Grey |
| Contributors | Grijalva, Santiago |
| Publisher | Georgia Institute of Technology |
| Source Sets | Georgia Tech Electronic Thesis and Dissertation Archive |
| Language | en_US |
| Detected Language | English |
| Type | Dissertation |
| Format | application/pdf |
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