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Showing 1 to 6 of 6 for “"dc power systems"”.
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Autonomous Local Control in Distributed DC Power Systems
… local control that adds damping to stabilize the power system. On the demand side, control strategies are shown for both single bus and multibus systems. In a single bus system, dynamic load interruption is shown to be useful to prevent voltage collapse, when demand exceeds supply, and to be …
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A novel backup protection scheme for hybrid AC/DC power systems
… scheme designed to safeguard hybrid AC/DC distribution networks against DC faults that are not cleared by the main MVDC (Medium Voltage DC) link protection. The protection scheme relies on the apparent impedance measured at the AC "side" of the MVDC link to detect faults on the DC …
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On the protection of compact DC power systems with high-power energy storage
High-power energy storage systems (ESS) are being considered for future aerospace platforms and other compact DC power system applications to improve the overall transient performance of electrical power distribution systems. These sources are being integrated with advanced bidirectional power …
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High Step-Up/Down Transformerless Multilevel Converter for Renewable Energy Applications
… focuses on a high step-up/down transformerless dc-dc modular multilevel converter (MMC) that would be applicable to dc power systems. The design achieves high voltage ratios for interfacing renewable energy sources such as photovoltaic and line interactive Uninterruptible Power System (UPS) …
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Direct-Current Power Flow Solvers and Energy Storage Sizing
In the modern power grid, the increasing penetration of intermittent energy sources like solar and wind into the comes with unsought challenges. With increasing smart grid directcurrent (DC) deployments in distribution feeders, microgrids, smart buildings, and highvoltage transmission, there is a …
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An integrated generator-rectifier system for high-power AC-DC conversion
High power ac-dc conversion plays an increasingly important role in energy conversion systems, such as wind turbines or electric ship grids. Conventional conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system …