as we know that N=120f/P
speed of an im can be controled only through changing no if
poles, can we control by changing the frequncy????
- 7 Answers
- 8406 Views
- JSW, I also Faced
- E-Mail Answers
Answer Posted / cnu
For the speed control of an induction motor if you consider
to change the number of poles, every time you want to
change a speed you cant remove or add the poles to a motor
coz this is done while manufacturing the machine.
So for the speed control of an induction motor we use the
Variable-Frequency Drive (VFD) which takes in the standard
voltage at 50Hz frequency and gives the output at any
frequency required. the frequency can vary from 0 Hz to
50Hz and we can also increase the frequency more than 50Hz
to make the motor run with speeds higher than the rated
speed of the motor.
| Is This Answer Correct ? | 11 Yes | 0 No |
Post New Answer View All Answers
We have given to 3phase supply to ups system & how can coming netural
what is KSR type transmission tower? What is LSR type transmission tower?
What kind of maintenance is conducted for Transformer
what is the Earth Voltages in Power Plants, Sub-stations, Industries, Residential & Commercial Buildings.
How to use computer cpu ups use for home inverter circuit board
what things to be considered when designing UPS
explain working principle of earth leakage relay
is IS says that neutral should be brought to switch box. and this one is a recomended practice
How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?
An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.
What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?
Explain how you decide what size of electrical wire do you need?
what is formula to cal cute earth pit numbers and size of earth strip used in earthing?
what is 400kv doble circuit quadpole tower?
what is KA rating and how can we choose switchgears on applications
