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What is the difference between servo drive and variable frequency drive?
Wiki User
∙ 13y ago
Servo drives are expensive and very intelligent. they are primarily used for positioning applications and could have a resolution of up to .0001" or more.
VFD's or AC drives are simple and cheap and primarily used for simple motion such as conveyors. AC drives are better than DC drives in the fact that you can customize the accel and decel ramps as well as some slip comp.
Servo drives offer full torque across the speed range and are much more efficient - 75%-90% where AC drives could be 40%-70%.
Application really depends on the accuracy you desire, and money you want to spend.
that's my 2 cents anyway, if I'm mistaken in any way o-well.
Wiki User
∙ 13y ago
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What is the difference between Variable Speed Drive and Variable Frequency Drive?
A variable frequency drive (VFD) refers to AC drives only and a variable speed drive (VSD) refers to either AC Drives or DC Drives. VFD's vary the speed of an AC motor by varying the frequency to the motor. VSD's referring to DC motors vary the speed by varying the voltage to the motor.
What is difference between servo drive and variable freqency drive?
there is no difference.
How do you decide whether the variable frequency drive is compatible with my DC motor or not?
Variable frequency Drive is not compatible with a DC Motor. VFD can be used only with AC motors, where frequency plays a key role in defining the speed of the motor.
What is meant by VFD?
A variable-frequency drive (VFD) is a system for controlling the speed of a rotational or linear alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.[1][2][3] A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives.
What is the main function of Variable frequency drive?
Main function of Variable Frequency Drive is to be able to run the AC Induction motors at different speeds (by changing the frequency). The speed is a function of frequency. N - Speed. F - Frequency P - Pole N= ( 120 x F)/ P
Can anyone tell me how to build single phase variable frequency drive?
Single phase variable frequency drives are commercially available. Building it by an individual is complicated.
How do variable speed motors work?
A variable sped drive is sometimes also known as a variable frequency drive. These drives are used in electro-mechanical drive systems to control AC motor speed and torque.
What's the difference between a variable frequency drive (VFD) and a variable speed drive (VSD)?
Adjustable speed drive (ASD) or variable-speed drive (VSD) describes equipment used to control the speed of machinery. Many industrial processes such as assembly lines must operate at different speeds for different products. Where process conditions demand adjustment of flow from a pump or fan, varying the speed of the drive may save energy compared with other techniques for flow control
What are the types of motor controls?
motor can be control by using variable frequency drive
Speed control of a.c motor?
Use a variable Frequency Drive. Sold by ABB, Allen-Bradley, and many others.
What is the energy savings of an electric motor when reducing the speed with a variable frequency drive?
definitly it give more efficient than variable stator voltage.............but in variable frequency ...............the frequency is not only variable....it is E/F control.because to maintain constant flux......... USUALLY THIS SPEED CONTROL IS ODOPTING IN INDUSTRIES......
Electronic component used to control speed of a motor?
In industrial, there is a device called variable frequency drive (allso frequency inverter, ac drive) to control the motor speed by adjusting output frequency.
