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Question
what is the VVVFD and?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
vvvfd means varieable voltage variable freqwency drive. 
Is This Answer Correct ?    6 Yes 0 No
Vijay
 
Answer
# 2
The electric drive which uses variable voltage and variable
frequency for its operation and control is called VVVF
drives.With the technology improvement in the realm of
power electronics now it is more easy to work with VVVF.
Cycloconverters are employed to obtain variable frequency
up to 400Hz.

VVVF find applications in railways traction,airplane etc.

Author:arbelectbit@yahoo.com
 
Is This Answer Correct ?    5 Yes 0 No
Iamdon
 
 
 
Answer
# 3
generaly AC drive supplied with AC voltage , but where we
need variable source , there we use VVVFD(variable voltage
variable frequency drive).
raquirement for VVVFD.......
1.ac source
2.rectfier circuit.
3.filter circuit.
4.inverter circuit
5.IGBT
 
Is This Answer Correct ?    2 Yes 0 No
Shashi Bhushan
 
Answer
# 4
varible voltage and varible frquency drive 
Is This Answer Correct ?    1 Yes 0 No
Kaushal
 

 
 
 
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