what is the major difference between dc generator and
synchronous generator?
- 4 Answers
- 9313 Views
- I also Faced
- E-Mail Answers
Answer Posted / 7anoter4
In three phase system the 3 phases windings are even
distributed along the stator periphery and since the 3
phase currents are 120 electrical degrees in time
distanced one from each other ,then an apparent rotating
magnetic field is installed[as an armature reaction].
The synchronous generator rotor rotates in the same time
with this field [stator itself does not move]. [differently
from the asynchronous[induction] generator in which rotor
velocity is more elevated than this field velocity and the
difference depends on the load.]
In d.c. generator no such rotating field is generated as
the armature reaction is always in d.c. field and it is
rotates with the rotor together[one could say it is
also "synchronous" rotation].
However this field disturbs the collector operation in the
commutation process.
In order to avoid this, commutation auxiliary poles are
located between excitation poles and are supplied by
armature current.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
how to decide the panel size like MDB ,SMDB PANEL SIZES
Define conversion efficiency of a power amplifier.
what is the formula of starting current of 3phase and 1 phase motor???
what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?
What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.
Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA
Draw the DOL starter and star delta starter drawing?
Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?
Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.
Is there any standard guidelines/Criteria to design NGR/NGT.?
what is the difference between megger and earth resister ??
power transmission pole used one support , that only for support or earthing
What is the difference between relays and contactor construction wise?
What is servo motor and what are different types of servo motor
How we can recongnise the phase displacement of transformer connection between primary & scondary...plzzz explain it with example.........
