what is the principle of vvvf drive motor

Answers were Sorted based on User's Feedback



what is the principle of vvvf drive motor..

Answer / jignesh parmar

IN MOTOR FLUX IS DIRECTLY PROPORTIONAL TO RATIO OF VOLTAGE
Vs frequency, i.e v/f it is derived from bellow formula
e= V = 4.44*flux*no. of turn*frequency
motor speed = 120*f/p
i.e speed can be ccontrolled by variying
frequency , but if only frequency increases then flux will
also increse,& flux increse beyond some level it cause
saturation also increse of flux increse loss, so to
maintain constant flux voltagge is also incresed in same
propotion to frequency as flux is directly proportion to
ratio of voltage/frequency i.e (v/f)
and that is called as variable voltage variable frequency
drive

Is This Answer Correct ?    79 Yes 17 No

what is the principle of vvvf drive motor..

Answer / nsnaidu

flux is directly proposnal to voltsge

Is This Answer Correct ?    14 Yes 2 No

what is the principle of vvvf drive motor..

Answer / kishore

flux is directly proposnal to the voltage.

Is This Answer Correct ?    1 Yes 3 No

Post New Answer

More Electrical Engineering Interview Questions

What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

0 Answers   ABB, APL,


what is the formula for building wiring to get the main breaker.

1 Answers  


What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?

0 Answers  


Why does amplifier gain reduce?

0 Answers  


What is the tension required for the 25000 CFM AHU belt

0 Answers  






What are the usege & different between UPS & batteries with charging system in in Substation?( UPS 120V AC & battery charger is 120v DC)

1 Answers  


A two-terminal variable resistor is known as a

1 Answers  


how can we calculate the current

3 Answers  


1. When do you use a VFD motor? 2. If the ceiling fan is on slow speed, does it consume less electricity? 3. If we want the fan to consume less electricity at low speed, what do we have to do? 4. What does “battery of 180 AMP HOUR” mean to you? 5. What does “battery of 180 AMP HOUR” mean to you? 6. If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

6 Answers   Asian Power, Bhel, Focus, Focus Energy, L&T,


how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

0 Answers  


What is the difference between a verilog task and verilog function?

0 Answers  


What happen if 200 KVAR capacitor connected to power continuesly?

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)