Doubly-fed Induction Generator Modeling and Control in DigSilent Power Factory CAMILLE HAMON Master’s Thesis at KTH School of Electrical Engineering XR-EE-ES 2010:004 Abstract International agreements have set high demands on the share of renewable energy in the total energy mix. From the different renewable sources‚ significant investments are made in wind power. More and more wind turbines are being built and their number is due to rise dramatically. There are many different generator
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Running Head: Yahoo and Amazon: Building a Competitive Advantage Assignment 1: Yahoo and Amazon: Building a Competitive Advantage BUS 599 1. Describe‚ in brief‚ the histories of both of Amazon.com and Yahoo.com‚ and determine the core business of each. Amazon.com has advertising banners at their partners’ sites like Yahoo‚ AltaVista and so on. When the potential customer searches for a topic; and clicks on the Amazon.com advertisement alongside the hits for the search‚ Amazon
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Abstract- This paper describes the control and design of a Doubly Fed Induction Generator (DFIG) using back-to-back PWM converter in wind turbines. A back-to-back PWM converter is used as the excitation power supply for the DFIG wind power generation of variable speed constant frequency. The Simulink model and control strategy of converter which is connected to grid side is analyzed. The grid side converter is used to regulate the voltage of the DC link capacitor. Besides it satisfies the unity power
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QUESTION ONE Toyota South Africa has moved into a new era in vehicle manufacturing in South Africa as a fully-fledged member of the Toyota Motor Corporation (TMC) global production network. Following a five year multi-billion Rand plant modernisation and revitalisation programme Toyota’s Prospecton manufacturing facility‚ just south of Durban‚ boasts the latest in world class automotive manufacturing technologies. Many of these are proprietary TMC systems only recently released for use in Toyota
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of the report was collected from primary as well as from secondary sources. In conducting the study and analyzing the data we have followed a deductive approach. Oral interviews were used as the data-collection instrument. The collected data were fed into computer and analysis was done with the help of computer through SPSS package. 1.4.3 Data Collection Method This report is based on primary data collected through face to face interviews with the contact person. Secondary data collected
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Jennifer Belcher ECO 252 The Federal Reserve also known as FED is the central bank of the United States and is responsible for regulating the quantity of money in the country. The Federal Reserve was created by Congress in 1913 to ensure the monetary stability of the economy. One of the initial functions of the FED was to encourage banks to extend new loans. The smaller banks were given the financial support of the central bank to ease their hesitation towards loaning their customers money. As
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Introduction This essay will examine how one knows about crime through a common sense perspective‚ a criminological point of view and a critical understanding of how crime is fed to the social world. This essay will also discuss why one may commit a crime whether it being because of one’s social economic background or opportunity of committing a crime. The media’s perspective on crime will also be talked about as many people their get source of information of a crime story through media and this
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Bus Boycott This year the event I have studied was the Bus Boycott in American‚ Montgomery‚ in 1955. The causes of the bus boycott are the racial discrimination that the African American community had been shown and also Rosa Parks protest and arrest. The consequences of the Bus Boycott is the involvement and the impact of the Supreme Court’s decision of desegregating all of America ‚ and also another consequence that is important to the event is the grand boost in the Civil Rights movement campaign
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Have you ever had a supervisor that your coworkers and yourself felt as though they had absolutely no clue what they were doing? Now that you are a new supervisor‚ you should not have to feel like you do not know what you are doing. Best practices for a new supervisor are critical. There are so many important things a new supervisor needs to know to successfully supervise others and help an organization be effective and prosper. What is a supervisor? According to "Business Dictionary" (2012)‚ “Person
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Choose three companies and observe how employees do their tasks. These can be three different fast-food restaurants or three entirely different types of companies‚ such as a fast-food restaurant‚ a department store‚ or the emergency room of a hospital. 2. Think about the differences in the operations involved in the input‚ operations‚ and output stages of these companies. Try to identify the nature of their operating systems. Are employees organized in different ways? If so‚ why? If possible‚
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