Interested to Buy Any Domain ? << Click Here >> for more details...
What is the working of AVR in AC generators?
- 13 Answers
- 96198 Views
- Navrachana University, I also Faced
- E-Mail Answers
Answer Posted / geeparthi
AVR's are normally used in the Diesel Generators.They are
used to control the output voltage depending upon load
connected , such that, the load will not cause any voltage
fluctuation and damage to the DG.
Automatic Voltage Regulator.It is
important part in Synchronous Generators, it controls the
output voltage of the generator by controlling its
excitation current. Thus it can control the output Reactive
Power of the Generator.
AVR increase or decrease excitation voltage for linear
voltage.Frequency depends on primover speed.
It is a device used to maintain a constant voltage at the
alternators terminals. It functions by maintaining the
excitation required to maintain the terminal voltage of the
alternator with change in the load.
Increase in excitation voltage increases reactive voltampere
(var) which decreases powerfactor (cos(phi)).
generally, voltage(V) of the alternator is kept constant so
thE rest of the components in VIcos(phi), ie. I and cos(phi)
have to vary according to the load.
Increase in I causes decrease in Pf and Decrease in I causes
increase in Pf.
so it is clear that Excitation V is proportional to var and
load current (I) and inversely proportional to power
factor(cos(phi)).
AS the name itself indicates it is a device which maintains
| Is This Answer Correct ? | 135 Yes | 4 No |
Post New Answer View All Answers
what is the safety points of vaccum circuit breaker.
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
What if high voltage side circuit breaker of a ehv transformer instead of lvcb? Kindly elaborate.
explain comutator action in detail.thanks
What is the meaning of C1, C61, C91 cable
What is the general power factor & min. power rating of TV,LCD type TV, CRt type TV, Scanner, printer?
how solar power plant energy meter multiplication factor
What is the Resposiblity of Electrical Utility Engineer
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
what is difference between speed mode and torque mode in motor?? explain in simple words please.
what are the applications of TIG welding
What are the factors influence the choice of an electrc drive?
what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?
Why is voltage is required to be within permissible range for an electrical equipment?
Mention what are the types of semi-conductors?
