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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Channel Turn-Off Energy Model for Zero-Voltage-Switching Wide Bandgap Devices
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Analysis and Design of Series Voltage Compensator for Differential Power Processing
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Voltage-Controlled Fast and Low-Loss Single-Photon Cross-Bar Switch Using Integrated Photonics
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Influence of V-Pits on the Turn-On Voltage of GaN-Based High Periodicity Multiple Quantum Well Solar Cells
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Parallel Matrix Multiplication Using Voltage-Controlled Magnetic Anisotropy Domain Wall Logic
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Emergency Voltage Regulation in Power Systems via Ripple-Type Control
With increasing penetrations of volatile renewable generation and cyber-physical disruptions, ensuring the safe operation of bulk power systems has become unprecedentedly challenging. Because communication and computational costs restrict centralized system dispatch to being called upon every few minutes, and because purely local schemes are shown to be insufficient, distributed controls have been advocated for handling unanticipated system conditions in real time. The applicability of distributed control schemes, however, is fundamentally limited by their need for widespread communication and model cognizance. In this context, we put forth a hybrid, low-communication, saturation-driven protocol for the coordination of control agents that are distributed over a physical system and are allowed to communicate with peers over a "hotline" communication network. Under this protocol, when agents observe a constraint violation based on local measurements, they respond locally until their control resources saturate, in which case they send a beacon for assistance to peer agents. The scheme ensures that minor violations are efficiently mitigated via fast local controls, whereas severe violations can be handled by collaboration among a relatively small set of agents. We evaluate the performance of this scheme via numerical tests on the IEEE 14-bus test feeder, where agents act upon noisy measurements under diverse scenarios of load variations and severe low-/high-voltage events.
Maximum Power Point Tracking and Voltage Control in a Solar-PV based DC Microgrid Using Simulink.
Abstract not provided.
Development of a Wind Turbine Generator Volt-Var Curve Control for Voltage Regulation in Grid Connected Systems.
Abstract not provided.
Distributed Mixed Voltage Angle and Frequency Droop Control of Microgrid Interconnections With Loss of Distribution-PMU Measurements
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