WHAT IS DIFFERENCE BETWEEN PHASE CONVERTER AND VFD
Answer / waheed imran virk
1) Phase Converter =
Three phase induction motors may operate adequately on an
unbalanced supply if not heavily loaded. This allows
various imperfect techniques to be used. A single-phase
motor can drive a three-phase generator, which will produce
a high-quality three-phase source but with high cost for
apparatus. Several methods exist to run three-phase motors
from a single-phase supply, these can in general be
classified as:
2)VFD =
A variable-frequency drive (VFD) (also termed adjustable-
frequency drive, variable-speed drive, AC drive, micro
drive or inverter drive) is a type of adjustable-speed
drive used in electro-mechanical drive systems to control
AC motor speed and torque by varying motor input frequency
and voltage
While VFDs are used in applications ranging from small
appliances to the largest of mine mill drives and
compressors, about a third of the world's electrical energy
is consumed by electric motors in fixed-speed centrifugal
pump, fan and compressor applications and VFDs' global
market penetration for all applications is still relatively
small. This highlights especially significant energy
efficiency improvement opportunities for retrofitted and
new VFD installations.
Is This Answer Correct ? | 1 Yes | 0 No |
who is ohm's and his law ?
how many units (kwh) are there if in one MW?
What is surger vector in 33Kv transmission feeder? We have AC power generator of 8MW which is paralleled with 33Kv EB grid. Some times our HT breaker gets trip off due to surge vector problem. How to over come it? Is there any device to observe the surge and avoid tripping?
Difference between KW & kVA
why the excitation is necessary to produce the reactive power
what are the tests comes under the type test, what tests comes under routine tests.
If we know the load for generator in KW then how it will be change to amps and also if we know the load in amps how it will change in KW and what Generator is good for that...suppose load is 500 amps 3phase......??
why we take transformer reading in kva
if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.
What happen if transformer neutral path get removed ?
what is direct dischage of power transformer
What do you mean by lighting transformer?