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Introduction
l It is becoming very popular the utilization of squirrel cage
induction motors with variable frequency drives (VFD's) in the
industry.
l The advance of power electronics technology and the cost of the
VFD's are making this utilization possible.
l The many advantages of this type of application are:
ÙSpeed variation.
ÙHeavy load inertia starting.
ÙHigh starting torque requirements.
ÙLow starting current requirements.
ÙHigh efficiency at low speed.
ÙHigh power factor.
l The induction motor with VFD's replaces with advantage today
the DC motors, and wound rotor motors.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoinduction motors with variable frequency drives (VFD's) in the
industry.
l The advance of power electronics technology and the cost of the
VFD's are making this utilization possible.
l The many advantages of this type of application are:
ÙSpeed variation.
ÙHeavy load inertia starting.
ÙHigh starting torque requirements.
ÙLow starting current requirements.
ÙHigh efficiency at low speed.
ÙHigh power factor.
l The induction motor with VFD's replaces with advantage today
the DC motors, and wound rotor motors.
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Why do you control the speed of DC motors?
because dc motor is a powerful & dangerous motor it is akiller
What are the different types of induction motors?
DOL(Direct Online starting) Star Delta starting Auto transformer starting Above methods are for squirrel cage induction motor Rotor resistance starting is used for wound rotor or slip ring induction motor
How single-phase induction motor classified?
The single phase induction motors are made self starting by providing an additional flux by some additional means. Now depending upon these additional means the single phase induction motors are classified as: 1.Split phase induction motor. 2.Capacitor start inductor motor. 3.Capacitor start capacitor run induction motor. 4. Shaded pole induction motor.
How many types of DC motor?
Types of AC MotorsClassification Based On Principle Of Operation:(a) Synchronous Motors.1. Plain2. Super(b) Asynchronous Motors.1. Induction Motors:(a) Squirrel Cage(b) Slip-Ring (external resistance).2. Commutator Motors:(a) Series(b) Compensated(c) Shunt(d) Repulsion(e) Repulsion-start induction(f) Repulsion induction
Theory for brake test on three phase induction motor?
why three phase induction motor is delta connected
What are the Four practical applications which depend upon electromagnetic induction for their operation?
Practical applications that depend upon electromagnetic induction are electrical generators and induction motors. Transformers and mechanically-powered flashlights also depend on electromagnetic induction.
What type of electric motors are used in cocoa processing factories?
Standard Induction Motors for general applications. Servo motors in case precision application like packing
Why is the efficiency of a three-phase induction motor about 85-87percentage?
Not always. I have seen induction motors for various applications having efficiency upto 95%.
Real time applications of induction motors?
Domestic fans, refrigerators, blowers, electric bikes, etc........
Why do you control the speed of DC motors?
because dc motor is a powerful & dangerous motor it is akiller
What has the author Xusheng Chen written?
Xusheng Chen has written: 'Induction generator modeling and relaying' -- subject(s): Electric machinery, Induction, Electric motors, Induction, Induction Electric machinery, Induction Electric motors
Why are the ac series motors preferred for electric traction?
ac motor is nothing but induction motor.So check out for characteristics of induction motors.
What has the author Eugene A Klingshirn written?
Eugene A. Klingshirn has written: 'Analytical and experimental study of high phase order induction motors' -- subject(s): Automobiles, Electric, Electric Automobiles, Electric motor vehicles, Electric motors, Induction, Electric propulsion, Equivalent circuits, Induction Electric motors, Induction motors, Stators
What are the various losses occurring in induction motors?
what are the various losses occurring in the motors
What are two types of motors used for hermetic compressors?
Rotary and Induction
What are the reasons for connecting resistance in the rotor circuit when starting wound rotor induction motors?
To limit the starting current in slip ring induction motors.
What has the author Jussi Huppunen written?
Jussi Huppunen has written: 'High-speed solid-rotor induction machine' -- subject(s): Electric motors, Induction, Induction Electric motors, Mathematical models
