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Title: variable frequency drive using microcontroller
Page Link: variable frequency drive using microcontroller -
Posted By: Guest
Created at: Monday 15th of April 2013 01:04:30 PM
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Title: SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES
Page Link: SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES -
Posted By: project report helper
Created at: Saturday 25th of September 2010 01:01:38 AM
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SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES



ABSTRACT
:

A novel open-loop speed control method for induction motors that provides high output torque and nearly zero steady-state speed error at any frequency is presented. The control scheme is based on the popular constant volts per hertz (V/f) method using low-cost open-loop current sensors. Only stator current measurements are needed to compensate for both stator resista ....etc

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Title: Variable Voltage And Variable Frequency drives full report
Page Link: Variable Voltage And Variable Frequency drives full report -
Posted By: seminar presentation
Created at: Tuesday 18th of May 2010 11:43:34 AM
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Variable Voltage And Variable Frequency drives

Presented By:
P.NATARAJU S.E.V.S.RAGHU VARMA
3rd year E.E.E. 3rd year E.E.E.

Abstract:-

Our varying industrial needs demand more precise control of the outputs of our basic electrical prime movers i.e, THE MOTORS. Basically dc motors are easy to control compared to their ac counter parts, but they have their own limitations with increase in capacity. Conversely ac motors in particular squirrel cag ....etc

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Title: pdf of variable voltage and variable frequency
Page Link: pdf of variable voltage and variable frequency -
Posted By: Guest
Created at: Tuesday 16th of October 2012 02:30:59 AM
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i need this pdf file can you please make it available for me. thanx ....etc

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Title: pen drive to pen drive data transfer without pc project ppt
Page Link: pen drive to pen drive data transfer without pc project ppt -
Posted By: ANUPAMA MOHAN
Created at: Wednesday 19th of March 2014 05:38:29 PM
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Title: working of transformerless variable frequency drive
Page Link: working of transformerless variable frequency drive -
Posted By: Guest
Created at: Thursday 11th of July 2013 04:08:44 AM
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Title: induction motor drive using seven level multilevel inverter for energy saving in variable torque load applications ppts
Page Link: induction motor drive using seven level multilevel inverter for energy saving in variable torque load applications ppts -
Posted By: Guest
Created at: Thursday 01st of May 2014 04:56:56 PM
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ppt related to induction motor drive using seven level multi level inverter for energy saving in variable torque load applications
PPT RELATED TO INDUCTION MOTOR DRIVE USING SEVEN LEVEL MULTI LEVEL INVETER FOR ENERGY SAVING IN VARIABLE TORQUE LOAD APPLICATIONS ....etc

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Title: SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES
Page Link: SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES -
Posted By: project report helper
Created at: Saturday 25th of September 2010 12:58:36 AM
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SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES



ABSTRACT
:

A novel open-loop speed control method for induction motors that provides high output torque and nearly zero steady-state speed error at any frequency is presented. The control scheme is based on the popular constant volts per hertz (V/f) method using low-cost open-loop current sensors. Only stator current measurements are needed to compensate for both stator resistance d ....etc

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Title: VARIABLE SPEED DC MOTOR DRIVE
Page Link: VARIABLE SPEED DC MOTOR DRIVE -
Posted By: seminar paper
Created at: Thursday 01st of March 2012 04:37:39 AM
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VARIABLE SPEED DC MOTOR DRIVE


DC MOTOR THEORY:
Inducing a Force on a Conductor.
There are two conditions which are necessary to produce a force on a conductor:
i. The conductor must be carrying current.
ii. The conductor must be within a magnetic field.
When these two conditions exist, a force will be applied to the conductor, which
will attempt to move the conductor in a direction perpendicular to the magnetic
field. This is the basic theory by which a ....etc

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Title: variable frequency drive
Page Link: variable frequency drive -
Posted By: project report tiger
Created at: Monday 01st of March 2010 02:31:26 AM
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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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