Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Split-Phase"”.
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Modelling and analysis of asynchronous and synchronous torques in split-phase induction machines
… of asynchronous and synchronous torques in a split-phase induction machine is investigated and quantified. The equivalent circuit for this type of machine is derived using the rotating field theory. It is extended to include harmonic effects. Using this model, winding harmonics and permeance …
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ANALYSIS, OPTIMIZATION, AND PRACTICAL DESIGN OF A SPLIT-PHASE DICKSON SWITCHED CAPACITOR CONVERTER FOR HIGH CURRENT APPLICATIONS
… current spikes. This can be solved using as split-phase control, which addresses charge redistribution in the Dickson SCC by controlling the charging and discharging of the flying capacitors, such that the equivalent branch voltages line up when switching occurs. In adapting the split-phase …
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Parallel execution for conflicting transactions
… introduces a new concurrency control technique, phase reconciliation, that uses per-core state to greatly reduce contention on popular database records for many important workloads. Phase reconciliation uses the idea of synchronized phases to amortize the cost of combining per-core data and to …
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Simplified expression of message-driven programs and quantification of their impact on performance
… in message-driven style is difficult due to the split-phase transactions it requires and due to the nondeterministic arrival of messages. We developed language constructs to express dependences between messages and computations in order to simplify expression of message-driven programs. …
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Analysis and design of high power density resonant switched-capacitor converters
… frequency and high conversion efficiency. A split-phase control scheme is used in order to eliminate the current transients associated with the Dickson SC converter and the resultant power loss. Employing these techniques, a Dickson SC converter prototype is implemented with GaN transistors. …
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Analysis of right-turn lane length in left-hand traffic countries at signalised intersections of urban roads
… lane at signalised intersections under split phase. Hence, there is a need to examine other phase types and timings and integrate the signal timing as a part of the geometric design In this thesis, two analytical expressions have been analysed for the design of deceleration length. The …
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Miniaturizing High Step-Down, High Output Current Power Converters
… derived by combining the VIRT with popular multi-phase concepts. The resulting split-phase half-turn VIRT is employed in a 380V input, 12V/1kW output data center supply having a peak efficiency of 97.7% and a full-load efficiency of 97.1% with a transformer volume up to 36% smaller than …
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On-line Traffic Signalization using Robust Feedback Control
… real-time traffic conditions and selects cycle, split, phase, and offset for the intersection according to detector data. A robust traffic feedback control begins with assembling traffic demands, traffic facility supply, and feedback control law for the existing traffic operating environment. …
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Control of DC Power Distribution Systems and Low-Voltage Grid-Interface Converter Design
… guaranteed. A high-efficiency two-stage single-phase ac-dc converter is designed to connect a 380 V bipolar dc microgrid with a 240 V split-phase single-phase ac system. The converter efficiencies using different two-level and three-level topologies with state-of-the-art semiconductor devices …
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High-performance power converters leveraging capacitor-based energy transfer
… a single inductor. For topologies that cannot, a split-phase control technique is introduced, which amends existing two-phase controls to completely eliminate the charge redistribution loss. In addition, alternative placements of inductors are explored to extend the family of hybrid converters. …
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Using Intrinsic 3rd Harmonics for Large Synchronous Generator Insulation Fault Condition Monitoring
As the most expensive electrical equipment in the power industry, the operational health of large synchronous generators is a primary concern for generator owners. This concern has become more pressing as many owners seek to extend the lifespan of their aging generation facilities. With the …