Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / soumya chatterjee
Syn. Speed = (120xf)/P. The basic principal of VFD is to
change the syn. speed of the drive by varying the
frequency. The input sinusoidal voltage gets converted to
DC and againg to AC with lower frequency. The basic
principal also ask for constant flux which is governed by
the ratio V/f. At lower frequency the voltage also reduces
to keep the value of the ratio constant.Which in turn
reduces the input current to the VFD as the voltage at the
incoming terminal of the VFD does not change by VFD
operation.Thereby causes saving in power consumption.
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
Should power factor be low or high?
what is mean by parallel operation of permanent magnet generators
what ispositive, negative, zero sequence impedence?
1. for eg, capacitor is used for many purposes(it act as filter, oscillator, bypass capacitor, memory storage etc...) 2. Please tell me some example circuits for different uses of capacitor( whenever and whereever and however we used capacitor as a filter, oscillator tuning etc..) 3. similarly for inductor and resistors(it act as what?) and when and how we want to act as like that?, and how we can used these components depends upon our requirments with example circuits and explanation? design to act as these components depends
how to get electrical supervisor competency certificate in gujarat. i did 3 year diploma in electrical
State kirchoff voltage law?
What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.
I NEED RRB APTITUDE QUESTIONS AND MODEL PAPER,PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in
What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
what percent do you derate your copper wire when you change from copper buss to copper wire
how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????
how to changeover ups in this power failur time?
harmonics filter
