Explain the function of VFD
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
SCR.
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 / 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 |
VFD is Voltage & Freq ratio with the help of these to
factors we can cntrol drive speed N .V/F ratio
Is This Answer Correct ? | 9 Yes | 6 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 / 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.
Imran Jalal
Electrical Engineer
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
BHOSRI KE
Is This Answer Correct ? | 7 Yes | 13 No |
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
What is resistance reading of earth copper rod with grid and without grid?
Is there any type of starter for DC motor other than two point,Three point and Four point starters?
why in isolation transformer we dont get any shok?
why HT voltage rating in multiple of 11
Why does inductive loads consume KVARs?
what is the principle of operation of synchronous motor and generator? explain in detail.
what is a reactive power? what is the relation with power factor?
documented proof that aluminium bus bars are better than aluminium cables
which starter is used for synchronous motor
Is 3C x 2.5 Sqmm Cable can withstand 40Amp Starting current? If Yes then specify your ans.
What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.