Answer Posted / shashi bhushan
generaly AC drive supplied with AC voltage , but where we
need variable source , there we use VVVFD(variable voltage
variable frequency drive).
raquirement for VVVFD.......
1.ac source
2.rectfier circuit.
3.filter circuit.
4.inverter circuit
5.IGBT
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
what is there inside an inverter and how it works?
how to changeover ups in this power failur time?
can we do the star delta connection of capacitor for 3- phase motor starter.
What is the difference between multimeter
i want some interview related questions with their answers which can help for attend the interviews...
What is lc oscillator?
what is vA rating and class of a ct.
what is the meaning of osr in transformer.
what is fault level of power system ?
What is the difference between earthing,ground&nutral?
What is the function of capacitor in electrical circuits?
we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?
What are the types of the glands and difference between single and double compression type of cable Glands.
1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating
How maesure earth neutral value & how much maximum value value required in between earth & neutral.
