what is the principle of vvvf drive motor
Answers were Sorted based on User's Feedback
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 formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
what is the formula for building wiring to get the main breaker.
What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?
Why does amplifier gain reduce?
What is the tension required for the 25000 CFM AHU belt
What are the usege & different between UPS & batteries with charging system in in Substation?( UPS 120V AC & battery charger is 120v DC)
A two-terminal variable resistor is known as a
how can we calculate the current
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.
What is the difference between a verilog task and verilog function?
What happen if 200 KVAR capacitor connected to power continuesly?