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 |
name of good resistance material
how many maximum nos of add on contact we shd provide on 4 no contactor
how does commutator convert a.c to d.c?
0 Answers NRSC National Remote Sensing Centre, RBC,
why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?
how tto ingress mw in turbine explain.procedure ?
A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03
in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4
1.In two wattmeter method if one wattmeter shows Negative reading then wat is reason? 2.Wat is the reason for low voltage in houses? 3.Wat is meant by current and voltage? wat is difference between the two?
what role does a star point or neutral point play in a star connected system?
If i have 200 test cases and we have to execute but we don't have time to execute all testcases.within 1 hour we have to execute that testcases and prepare the test report.so how i have to resolve this problem? is there is any technique in the testing.
what is the practical application of full adder circuit?
0 Answers College School Exams Tests,
in a distribution board,if we have a load and we have selected a cable after making all calcs (Deratings and V.D , ect...) the cable we have selected was 10mm.sq. now, shall the internal cable inside the switchboard should be 10 mm.sq Like the external or it can be Less???? if somebody have an specs or information he can help D:
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)