Project paln Soft starter and soft stopping for speed control for induction motors Introduction The project is entirely on the design and development of a soft starter converter that will satisfy and implement the soft starting and soft stopping for speed control of an induction motor. Soft starters also called solid state starter are used for gentle starting and stopping of induction motors. Pumps‚ centrifuges‚ compressors‚ escalators‚ belt conveyors‚ mills‚ fans‚ stone crusher and saws are typical
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software and to exercise new functionality. For help installing PageMaker 7.0‚ review the How_to_Install.wri (Windows) and How_to_Install.txt (Macintosh) documents available on the PageMaker 7.0 application CD-ROM. For information on filters‚ converters‚ and cross-platform issues‚ refer to the related ReadMe files on your PageMaker 7.0 application CD-ROM and in the PageMaker 7.0 folder on your hard drive after installation. The following documents are installed with PageMaker 7.0 in a folder
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installing algorithm in the microcontroller of the DC motor driver and it can be reprogrammed according to the requirement. The speed control makes the solar tracking system to track the Sun more accurately and the torque control saves energy. converter is used to step down the voltage in order to reduce the turning speed of solar panel [4]. Fig.1. Block diagram of motor driver I. INTRODUCTION Solar tracking system is used to track the position of sun in order to get the maximum energy
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battery‚ converter/inverter‚ motor‚ battery. INTRODUCTION The review is finished through searching various scholarly articles‚ books‚ dissertations‚ conference proceedings which are relevant to electric vehicle technology. From Automotive Power Generation and Control‚ the history and developments of electric vehicle technology has been reviewed. ELECTRIC AND ELECTRIC HYBRID VEHICLE TECHNOLOGY: A SURVEY interpreted the basic structure of electric vehicles‚ which consists of battery‚ converter‚ motor
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requires high starting torque. The induction motor used in this experiment is a there-phase squirrel-cage induction motor. 2.2 Power converter Since it is necessary to adjust the voltage magnitude according to maintain a constant air-gap flux‚ when the motor supply frequency is varies‚ a power-converter is used in the experiment A power converter is power-electronics based device which can supple power with varied frequency. It first converts the normally available fixed frequency ac supply
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Revolution - After the Civil War‚ in what some scholars have termed a "second Industrial Revolution‚" the growth was in heavy industry and the production of steel‚ petroleum‚ electric power‚ and the industrial machinery to produce other goods 5. Bessemer Process- The technological breakthrough that launched the rise of heavy industry was the discovery of a new process for making large quantities of steel 6. Andrew Carnegie- Leadership of the fast-growing steel industry passed to a shrewd business
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Early American Industrialists An industrialists is someone who manages or has significant financial interest in an industrial enterprise. In the eyes of many‚ the early American industrialists were cruel and selfish people who lacked concern for others and took advantage of the worker; but to my way of thinking‚ they were smart people who worked hard to make it to where they were and without some of them we would not have some of the things we have today. Andrew Carnegie‚ the richest man in the
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1.0 What Causes the Tides Tides are periodic rises and falls of large bodies of water. Tides are caused by the gravitational interaction between the earth and the moon. Tides are the cyclic rising and falling of earth’s ocean surface caused by the tidal forces of the moon and the sun acting on the earth . Tides cause changes in the depth of the sea and produce oscillating currents known as tidal streams‚ making prediction of tides important for coastal navigation. The strip of seashore
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ENERGY BALANCE Desulphurizer Here Sulphur in Naphtha is made to react with Hydrogen in presence of catalysts to give Hydrogen Sulphide. This reaction takes place at a temperature of 623 K H2 + S Hydrogen and Naphtha are assumed to be stored at 303 K Specific Heat capacity of naphtha is assumed to be 3.5235 kcal/kmol Specific Heat capacity of Hydrogen =(6.62+0.00081T) kcal/kmol K ∆H = ∑ ni ∫ C pi dT = 6.015915 x10 6 kcal hr i Hence heat required to raise their temperature from 303 K to
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steel and increase his profits‚ Carnegie bought out companies that provided raw materials like iron‚ which is one of the main components of steel. He bought out coal companies as well because it was needed to heat the furnaces that were used in the Bessemer process. Not only did he buy products to produce his steel‚ he also bought railroads so he could ship his steel at a much lower cost. He was able to beat out competitors by producing his steel cheap and efficient that everyone chose to buy form him
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