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

Dc circuits, Dc Circuits: In this unit, you have learned about methods...

Dc Circuits: In this unit, you have learned about methods of network analysis which are general in nature such as KCL, KVL, Nodal and Mesh analysis. These general methods may

Energy stored in the coil, The term representing the energy stored in the c...

The term representing the energy stored in the coil may be written in terms of the inductance of the coil as... The energy stored in the coil increases with the square of t

Customer indexing, Customer Indexing: Customer indexing (CI) is a meth...

Customer Indexing: Customer indexing (CI) is a method for enumerating the total number of consumers in a utility and tagging them to their respective poles, transformers and f

Instrument, Differentiate between dual beam and dual trace oscilloscope

Differentiate between dual beam and dual trace oscilloscope

What is memory paging, What is memory paging? The memory paging mechan...

What is memory paging? The memory paging mechanism located inside the 80386 and above permits any physical memory location to be assigned to some linear address.

Explain about the term embedded system, Explain about the term embedded sys...

Explain about the term embedded system. An embedded system is a system which has software embedded within computer-hardware that makes a system dedicated for an application(s)

Apply required morphological operations and give the output, You are given ...

You are given a binary image consisting of only zeros and ones, see image-A. Apply required morphological operations and give the output images on the grid.

Transistor, describe the compensation technique for both Vbe and Icbo

describe the compensation technique for both Vbe and Icbo

.#title.Simulation on Half wave rectifier using PSpice, How to plot output ...

How to plot output power Vs load resistor graph using PSpice softwaer for half wave rectifier circuit

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