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 19 of 19 for “"convertor"”.
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Feasibility study of a convertor assembly for fusion blanket experiments.
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1971. M.S.
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Free-Piston Stirling Convertor Model Development, Validation, and Analysis for Space Power Systems
<p>The Advanced Stirling Convertor (ASC) is a free-piston Stirling engine coupled with a linear alternator currently being under extended testing at the NASA Glenn Research Center (GRC). Using the Sage 1-D Stirling modeling software, a linear alternator model was developed using two separate …
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Strength in Flexibility; Research into Innovative Flexible Bearing Designs for Wave Convertor Permanent Magnet Generators
Originally this research was to investigate the use of hydrostatic bearings in large linear machines, such as linear generators, and determine their viability in a power generation context. It quickly became clear that it was possible to make hydro-static bearings viable, however the methods …
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Matlab based modeling and simulink package for DC-DC boost convertor to enhance learning process of power electronics
… out and see the effectiveness of DC-DC boost convertors Simulink package for the enhancement of learning process of Power electronic course. A Pre�research statistical analysis based on the response of concerned students acquired through a relative questioner is employed to affirm the need of …
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ANALYSIS OF COMPOSITE A-C AND D-C SYSTEMS
… and the mathematical models of unbalanced convertor operation using constant firing delay- and equidistant firing control have boon developed. The effect of the simplifying assumptions used to assess convertor operation were considered and it was found that these assumptions introduce …
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Development of a DFIG wind energy system for grid integration studies
… reactive power control through the rotor side convertor and lower rating of converter which leads to lower cost of the system. The system below is a schematic of experimental set-up of the doubly fed induction generator connected to the grid.
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Intensity distribution in cylindrical and bowl shaped transducers and sono-dialysis of a caustic solution
… and 1/16 inch length) was used as a detector-convertor of sonic pressures. The alternating voltages thus produced were indicated by a vacuum tube voltmeter. This element was cemented in a hypodermic needle in turn was held in a lucite rod (1/2 inch in diameter and five inches in length) which …
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ΜΕΘΟΔΟΙ ΜΕΤΑΤΡΟΠΩΝ ΚΩΔΙΚΑ ΔΙΑΜΟΡΦΩΣΗΣ ΔΕΛΤΑ ΓΙΑ ΤΗ ΒΕΛΤΙΩΣΗ ΚΑΙ ΑΠΛΟΥΣΤΕΥΣΗ ΤΗΣΕΠΕΞΕΡΓΑΣΙΑΣ ΣΗΜΑΤΩΝ
… OPERATIONS. A SIMPLE DIGITAL NETWORK, A "RATE CONVERTOR", CAN RESTORE THE RATE OF THE FILTER OUTPUT SEQUENCE TO THAT OF THE INPUT SEQUENCE. WITH THE CODE CONVERSION METHOD, AN ADAPTIVE DM (ADM) SEQUENCE CAN BE CONVERTED TO AN EQUIVALENT LDM SEQUENCE BY A SIMPLE PROPOSED NETWORK. THE RESULTING …
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Induction motors with modulated terminal voltage
… voltage and also to a phase-stepping frequency convertor which incorporates chopper modulation. Experimental results are included to illustrate the validity of the analytical method.
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Intrusion Detection using Bit Timing Characteristics for CAN Bus
… TOFs, we use a device called Time-to-Digital Convertor, which essentially triggers a ring oscillator to measure time values between rising/falling edges of a signal, to the order of picosecond accuracy. These timing values are used as features into the K-nearest neighbors (KNN) classifier …
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Performance Assessment and Management of Large Wind Farms under Abnormal Grid Operating Conditions
… fault impedance, or short-circuit impedance of convertor based wind farm cannot be directly evaluated through conventional methods without explicitly factoring internal machine control actions. The dynamic fault impedance of machine with positive sequence control is hard to standardize. A case …
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Arsenic speciation by ion-exchange chromatography with on- line determination by hydride generation: electronic modification of the D.C. plasma by photon counting
… interfaced to a personal computer through an AID convertor. The .photon integrator has adjustable threshold settings and an adjustable post-gain device.
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Combustion Visualization And Particulate Matter Emission Of A Gdi Engine By Using Gasoline And E85
… higher HC and PM emissions, catalytic convertor efficiency, knocking, and pre-ignition. Besides, advanced technologies represent higher production cost.</p> <p>Because of the limited resource of petroleum-based fuels, ethanol is deemed as the alternative fuel for gasoline due to its …
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A study to characterise the “arsenic rash” observed at a copper smelter in Tsumeb, Namibia
… arsenic plant, baghouse dust from the ausmelt & convertor plants, and “cake” from the Effluent Treatment Plant (“ETP”)). Analysis of the chemical compounds present in the four samples was performed by an external certified laboratory in Pretoria, South Africa. For the purposes of skin patch …
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Fatigue reliability assessment of co-located offshore wind and wave energy systems
Offshore renewable energy, generated from wind and waves is being increasingly considered in many parts of the world. The efficient and sustainable use of marine space and co-location of ocean infrastructure to meet several needs including energy generation, fishing, transportation, etc. is also …
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High Voltage DC-DC Converter Design for Submarine Application
<p>In this work a proof of concept for a step-down DC-DC converter used in a high voltage submarine application is presented. The purpose of the converter is to step down a 5000V-6000V input to a 24V output which can serve as an input to a submarine sensor. The completed system consists of two …
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A Wide Input Power Line Energy Harvesting Circuit For Wireless Sensor Nodes
Massive deployment of wireless IoT (Internet of Things) devices makes replacement or recharge of batteries expensive and impractical for some applications. Energy harvesting is a promising solution, and various designs are proposed to harvest power from ambient resources including thermal, …
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The development of ceria-based catalysts for automotive after-treatment applications
Ceria (cerium oxide) based materials have been widely used for catalytic applications including; fluid catalytic cracking, water gas shift reactions, solid oxide fuel cells and automotive catalytic after-treatment. It has often been the material of choice for supporting precious metals in many of …