please do send me the ppt of the project(pendrive to pendrive data transfer without using pc)
....etc

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Variable Frequency Drives

Introduction
¢ Variable Frequency Drives are devices which control the speed of alternating current(AC) electric motors by controlling the frequency of the supply voltage of the motor. ¢ Motor-driven systems are designed to handle peak loads. If the system is running at a reduced load for some period of time, it will lead to energy inefficiency. ¢ With Variable frequency drives and the ability to adjust the speed of the motor, enables you to match the motor output to load requirement ....etc

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pls send variable frequency drive using microcontroller ppt ....etc

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A large interest in renewable energy systems has been developed to mitigate the green house effect. In Western Europe, the focus is thus, on wind power and especially on offshore locations, due to higher energy production, a longer expected life time and lack of suitable wind turbine sites on land. A DC cable is the preferred choice when connecting large offshore wind farms to the grid. The utilization of the Dc cables was enabled by the new HVDC transmission technology using voltage sourced converters. The offshore windfarms that are being bui ....etc

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i request to sent me the working of transformerless variable frequency drive ....etc

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Difference between the chopper fed and converter fed drives ....etc

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Abstract –
The matrix converter is superior to the P W inverter drives because of its regeneration ability and sinusoidal input current. Therefore, it meets the stringent energy-efficiency and power quality requirements of the new century. This paper describes the basic operating principles and control method of the matrix converted; and reports the detailed experimental operating characteristics of an I1 kVA matrix converter drive over its full operating range. Through the experimental operating characteristics ....etc

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SUBMITTED BY
ACHYUTH KURELLA


ABSTRACT
Abstract- Basically, the motor drive system comprises a voltage source inverter-fed induction motor (VSIM): namely a three-phase voltage source inverter and the induction motor. The squirrel-cage induction motor voltage equations are based on an orthogonal d-q reference-rotating frame where the coordinates rotate with the controlled source frequency. The paper presents a novel fuzzy logic controller for high performance induction motor drive system. The inputs to the fuzz ....etc

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A large interest in renewable energy systems has been developed to mitigate the green house effect. In Western Europe, the focus is thus, on wind power and especially on offshore locations, due to higher energy production, a longer expected life time and lack of suitable wind turbine sites on land. A DC cable is the preferred choice when connecting large offshore wind farms to the grid. The utilization of the Dc cables was enabled by the new HVDC transmission technology using voltage sourced converters. The offshore windfarms that are being bui ....etc

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The High frequency attenuation in shielded distribution cable has been extensively studied. But in the case of solid dielectric cable, this has not been done. A solid dielectric cable has a bit more complex structure including the semiconducting “bedding” layers and a moisture barrier.high frequency loss is created by these sources.The purpose of these bedding layers is to seal the cable against moisture ingress and also accomodate for the thermal expansion of the cable. The cables studied here are the ones with a corrugated copper sheat ....etc

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