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Distributed Optimization Method For Intelligent Control Of Dc Microgrids, Yuanyuan Fan
Distributed Optimization Method For Intelligent Control Of Dc Microgrids, Yuanyuan Fan
Theses and Dissertations
Most of the distributed energy resources, loads and energy storage systems in a DC microgrid are equipped with power electronic converters. With the integration of advanced power electronics devices, a microgrid is able to utilize a broader range of technologies in its design and operation. A key feature of power electronic converter based systems is the ability to direct energy flow within a system with their coordinated operation. A system level control is needed for coordination where converters execute reference points dictated by a system-level control in order to achieve system level goals. System goals can be expressed as a …
Fault Protection In Dc Microgrids Based On Autonomous Operation Of All Components, Qiu Deng
Fault Protection In Dc Microgrids Based On Autonomous Operation Of All Components, Qiu Deng
Theses and Dissertations
DC power distribution systems (or so called DC microgrids) are of wide interest for various power applications due to their advantages over traditional AC power distribution systems with respect to power density and power distribution efficiency. On the other hand, short-circuit faults present formidable hazards in these systems. It is difficult to extinguish these arc faults via conventional circuit breakers due to the lack of natural zero-crossing of DC current. Also the DC breakers are usually more bulky and costly. Today, fault protection in these systems – to the extent that it exists – relies on over-current time-out limits in …