999 resultados para Operation Overlord.


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Includes bibliography.

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On June 6th, 1944, Allied forces stormed the beaches of Normandy as a part of Operation Overlord, the Allied invasion of France. While they experienced pockets of stiff resistance, Allied troops sustained far fewer casualties than they had expected. The reason for this was due to Operation Fortitude, a deception mission that intended to fool Hitler about the time and location of the Allied invasion mission. The use of double agents by British Intelligence services was essential for the effective execution of Fortitude. The story of the double agents goes beyond their success during Fortitude. Double agents were initially recruited as German agents, but key agents immediately turned themselves in to British authorities upon reaching the nation. These agents decided to become involved with British Intelligence due to broader circumstances that were happening in Europe. The emergence of Fascist regimes disrupted the political landscape of Europe and led to widespread condemnation from political and social spheres. Their development as double agents became crucial to their effectiveness during Operation Fortitude. Their successful infiltration of German Intelligence allowed them to convince Hitler and German High Command that the main Allied invasion force would come at the Pas de Calais instead of Normandy. The result was that the Allies met an unprepared German defense force on D-Day and were able to advance past the beaches. The work of the double agents during Fortitude saved thousands of Allied lives and was vital to the success of Operation Overlord.

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Cover title.

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Poor air quality has a huge detrimental effect, both economic and on the quality of life, in Australia. Transit oriented design (TOD), which aims to minimise urban sprawl and lower dependency on vehicles, leads to an increasing number of buildings close to transport corridors. This project aims at providing guidelines that are appropriate to include within City Plan to inform future planning along road corridors, and provide recommendations on when mitigation measures should be utilised.

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This paper describes the operation of a microgrid that contains a custom power park (CPP). The park may contain an unbalanced and/or nonlinear load and the microgrid may contain many dis-tributed generators (DGs). One of the DGs in the microgrid is used as a compensator to achieve load compensation. A new method is proposed for current reference generation for load compensation, which takes into account the real and reactive power to be supplied by the DG connected to the compensator. The real and reactive power from the DGs and the utility source is tightly regulated assuming that dedicated communication channels are available. Therefore this scheme is most suitable in cases where the loads in CPP and DGs are physically located close to each other. The proposal is validated through extensive simulation studies using EMTDC/PSCAD software package (version 4.2).

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In this paper, a new power sharing control method for a microgrid with several distributed generation units is proposed. The presence of both inertial and noninertial sources with different power ratings, maximum power point tracking, and various types of loads pose a great challenge for the power sharing and system stability. The conventional droop control method is modified to achieve the desired power sharing ensuring system stability in a highly resistive network. A transformation matrix is formed to derive equivalent real and reactive power output of the converter and equivalent feedback gain matrix for the modified droop equation. The proposed control strategy, aimed for the prototype microgrid planned at Queensland University of Technology, is validated through extensive simulation results using PSCAD/EMTDC software.

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This paper shows how the power quality can be improved in a microgrid that is supplying a nonlinear and unbalanced load. The microgrid contains a hybrid combination of inertial and converter interfaced distributed generation units where a decentralized power sharing algorithm is used to control its power management. One of the distributed generators in the microgrid is used as a power quality compensator for the unbalanced and harmonic load. The current reference generation for power quality improvement takes into account the active and reactive power to be supplied by the micro source which is connected to the compensator. Depending on the power requirement of the nonlinear load, the proposed control scheme can change modes of operation without any external communication interfaces. The compensator can operate in two modes depending on the entire power demand of the unbalanced nonlinear load. The proposed control scheme can even compensate system unbalance caused by the single-phase micro sources and load changes. The efficacy of the proposed power quality improvement control and method in such a microgrid is validated through extensive simulation studies using PSCAD/EMTDC software with detailed dynamic models of the micro sources and power electronic converters