Answers were Sorted based on User's Feedback
Answer / mahesh sali
THE FUNCTION OF VFD ( VARIABLE FREQUENCY DRIVE ) IS TO
CONTROL THE SPEED OF THE MOTOR , TORQUE , CURRENT BY
CONTROLLING THE FREQUENCY .
THE FREQ. CAN CONTROL BY CONTROLLING THE FIRING ANGLE OF
|Is This Answer Correct ?||32 Yes||1 No|
Answer / chetan
vfd-variable frequency drive
as its name explains its function that by changing the
frequency of the power supply fed to the motor we can
change the speed of the motor as N=120f/p
where f is frequency
p-no. of poles
N- speed of motor
In vfd there are SCRs and the frequency can be changed by
controlling the firing angle of the SCRs.
VFD have alot of advantages over simple starter the bigest
one is energy saving.
|Is This Answer Correct ?||11 Yes||3 No|
Answer / maheswaran.d
enargy seving &speed control unit
|Is This Answer Correct ?||6 Yes||0 No|
Answer / j venkteswaran
VFD is for controlling the speed of the motor by adjusting
the frequency and voltage.
If voltage decreases frequency will decrease,if voltage
increases frequency will increase this is the general
principle as V/f ratio
|Is This Answer Correct ?||12 Yes||7 No|
Answer / amit saha
VFD MINING VARIABLE FREQUENCY DRIVE. VFD IS TO
CONTROL THE SPEED OF THE MOTOR, TORQUE, CURRENT BY
CONTROLLING THE FREQUENCY .
BY AMIT SAHA
|Is This Answer Correct ?||3 Yes||1 No|
Answer / mahesh
IGBT using pulse with modulation
|Is This Answer Correct ?||2 Yes||1 No|
Answer / muhammad imran jalal
The function of IGBT in VFDs is to chopp the DC voltage in
relation to original sine wave entering in the rectifier
section of the VFD. the switching speed of IGBTs is very
high as compared to Bipolar Transistors. Energy is saved in
VFDs by Affinity laws.
|Is This Answer Correct ?||0 Yes||0 No|
Answer / c.sakthi
vfd means veriable frequncy drive and this vfd used motor
is starting energy saved and power cable cost saved speed
control is easy
|Is This Answer Correct ?||0 Yes||1 No|
Answer / tera baap
MADERCHOD MAINE AAJ TAK VFD NAHI PADHA HAI TO ANSWER KYA DU
|Is This Answer Correct ?||7 Yes||13 No|
how to fit 3 HP crompton gear motor with conveyor with the use of staring delta starter or ordinary starter?
HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.
How can we save electrical cost i.e switchgear, wiring, conduiting etc in a room?
What is the knee point voltage of CT-100/5,15VA,5P20 ?
what is b checks and m checks in diesel generator maintenance?
How can i calculate knee point voltage of 800/5A Current transformer?please explain me with suitable calculation?
what is the Transformer Impedence?How can calculate?
why all transformer colour is same?
Why only 1ph,2ph,3ph supplies are universally used?? Why not 4ph or 5ph??
What is the field weakening mode of a ac motor?
when current lags behind voltage how does it affect the circuit.In other words what is the significance of lagging current?
what's the simultenous maximum demand (SMD)..what the diffrent MD and SMD?