Explain about synchronous machines, Electrical Engineering

Assignment Help:

Q. Explain about Synchronous machines?

Large ac power networks operating at a constant frequency of 60 Hz in the United States (50 Hz in Europe) rely almost exclusively on synchronous generators to generate electric energy. They can also have synchronous compensators or condensers at key points for reactive power control. Generators are the largest single-unit electric machines in production, having power ratings in the range of 1500 MVA, and we can expect machines of several thousand MVA to come into use in future decades. Private, standby, and peak-load plants with diesel or gas-turbine prime movers also have alternators. Non-land-based synchronous plants can be found on oil rigs, on large aircraft with hydraulically driven alternators operating at 400 Hz, and on ships for variable frequency supply to synchronous propeller motors. Synchronous motors provide constant speed industrial drives with the possibility of power factor correction, although they are not often built in small ratings, for which the induction motor is cheaper.

 


Related Discussions:- Explain about synchronous machines

Achieving reforms goals using gis applications, Achieving reforms goals usi...

Achieving reforms goals using GIS applications: GIS could help in achieving the above reforms goals through various applications: •  Creation of consumer database and cons

What do you mean by the term procedure, What do you mean by the term proced...

What do you mean by the term procedure? PROC: The PROC and ENDP directives specify the start and end of a procedure. Such directives force structure while the procedure is cle

What are tightly coupled systems, What are tightly coupled systems or close...

What are tightly coupled systems or closely coupled systems? In a tightly coupled systems the microprocessor (either coprocessor or independent processors) might be share a com

Explain the voltage regulation, Explain the Voltage Regulation? The per...

Explain the Voltage Regulation? The percent of voltage regulation of a generator is defined as the ratio of the change in voltage from no-load to full-load to the full-load vol

Find the current flow through resistor using norton theorem, Use Norton Th...

Use Norton Theorem, find the current flow through resistor R=10Ω.

Inquire, how we can say that 3 phase induction motor is short curcited pra...

how we can say that 3 phase induction motor is short curcited practically?

Clippers, dis advantage of series clippers?

dis advantage of series clippers?

Operation of zener diode, Operation of Zener Diode The Zener diode's o...

Operation of Zener Diode The Zener diode's operation depends upon the heavy doping of its p-n junction permitting electrons to tunnel from the valence band of the p-type mater

Oscilloscope probe compensation, Q.   what is oscilloscope probe compensati...

Q.   what is oscilloscope probe compensation and how is it adjusted?  What effects are noted when the compensation is not correctly adjustment? Direct Probe: This probe  is

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd