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 7 of 7 for “"turbogenerator"”.
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An investigation of turbogenerator dynamics and control
… an investigation of the dynamics and control of turbogenerators from a multivariable control viewpoint. The multivariate control framework chosen -Individual Channel Analysis and Design- is particularly appropriate since it encapsulates the dynamical characteristics of the uncontrolled system …
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Design of a 50-watt air supplied turbogenerator
… the design of a high-pressure-ratio, low-flow turbogenerator with 50 W electrical power output, designed to operate from a 5-bar air supply. The research shows that a MEMS-based silicon turbine in combination with a micro-machined generator can meet the design objectives of the turbogenerator. …
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Diagnosis of arcing in retaining rings of turbogenerators
… and most highly stressed component of the entire turbogenerator system. Arcing in retaining rings is a very serious problem and could easily escalate to a full-blown failure. In this project we diagnose arcing in the retaining rings. We determine the most likely mechanism by which arcing occurs …
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Materials characterization and structural design of ceramic micro turbomachinery
… analysis to evaluate the reliability of the turbogenerator. The all-silicon cooled engines will potentially run in the creep regime of silicon. As a result, thermo-structural analysis is required to assess the trade-off between structural reliability and engine performance. Since the heat …
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Low load operation of turbine-driven boiler feed pumps
… relatively typical plant. The Unit (a boiler and turbogenerator set) selected for study was one with the most thorough instrumentation available for remote monitoring. The BFPT system of this Unit was modelled in Flownex, a one-dimensional thermofluid process modelling package. The model included …
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Induction generators in mini and micro hydro applications as a low cost alternative
… sub-systems like the induction generator and turbogenerator are replaced by their real physical scaled down models while others are simulated on microcomputers controlling these generators. The chief purpose of the real-time simulation model is to study the behaviour of a minihydro power …
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ΣΥΖΕΥΓΜΕΝΕΣ ΤΑΛΑΝΤΩΣΕΙΣ ΑΞΟΝΩΝ ΜΕ ΡΩΓΜΗ
A TRANSVERSE CRACK ON A SHAFT CAUSES A COMPLIANCE (LOCAL FLEXIBILITY). THIS COMPLIANCE IS REPRESENTED BY A MATRIX 6X6, WHICH IS CALCULATED ANALYTICALLY. THE ASSYMETRY IN THE CRACK AREA CAUSES COUPLED VIBRATIONS. THIS PROPERTY IS USED TO DEVELOP A NEW METHOD FOR THE DETECTION OF A CRACK IN ROTATING …