Nonsalient-pole rotor construction, Electrical Engineering

Assignment Help:

Q. Nonsalient-pole rotor construction?

The nonsalient-pole (smooth or cylindrical) rotor construction is preferred for high-speed turbine-driven alternators (known also as turbo alternators or turbine generators), which are usually of two or four poles driven by steamturbines or gas turbines. The rotors for suchmachines may be made either from a single steel forging or from several forgings shrunk together on the shaft.

The maximum value of the induced voltage is

666_Nonsalient-pole rotor construction.png

which are identical in form to the corresponding emf equations for a transformer. The effect of a time-varying flux in association with stationary transformer windings is the same as that of the relative motion of a coil and a constant-amplitude spatial flux-density wave in a rotating machine. The space distribution of flux density is transformed into a time variation of voltage because of the time element introduced by mechanical rotation. The induced voltage is a single-phase voltage for single-phase synchronous machines of the nature discussed so far. As pointed out earlier, to avoid the pulsating torque, the designer could employ polyphase windings and polyphase sources to develop constant power under balanced conditions of operation.


Related Discussions:- Nonsalient-pole rotor construction

Engine management systems for ic engines, In continuation of Part-B, the st...

In continuation of Part-B, the student is required to configure an engine management system for the proposed engine and produce a report including the following: A preamble

Determine maximum neutral current-power factor, 1.)  A three phase, D0 HP, ...

1.)  A three phase, D0 HP, 1765 rpm, BA0 V induction motor operating at three quarter load has an efficiency of 91% and a power factor of 87%. Determine active power, apparent pow

Theoretical circuit, Theoretical Circuit The theoretical circuit is ava...

Theoretical Circuit The theoretical circuit is available in form 1.Passive materials with mediocre dimension is used by the manufacturer. In order to make a theoretical circuit

Evaluate the form factor, Evaluate the form factor: For the saw tooth ...

Evaluate the form factor: For the saw tooth wave illustrated in Figure, find out the form factor. Figure: Saw Tooth Wave Solution Time period of given wave i

Electrical circuits and systems, Electrical circuits and systems : Elec...

Electrical circuits and systems : Electrical systems allow energy to be conveniently delivered from the point of supply to the point of application - e.g. electric railways, ca

Draw an electrical relay diagram, Draw an electrical relay diagram rung sho...

Draw an electrical relay diagram rung showing a N/O contact of CR1(coil) in series witha N/C contact of CR2(Coil), operating a lamp L1. A delay-on (TON) relay has a preset of 5.

Rftfrfr, #questionfrfrfrfr..

#questionfrfrfrfr..

Determine the electromagnetic torque developed, Q. A dc series motor, with ...

Q. A dc series motor, with a design constant K a = 40 and flux per pole of 46.15 mWb, operates at 200 V while taking a current of 325 A. The total series-field and armature-circui

Schematic symbols, Schematic Symbols The junction gate field-effect t...

Schematic Symbols The junction gate field-effect transistor or JFET gate is sometimes drawn in the middle of the channel (in place of at the drain or source electrode as in t

Homework, voice signal is measured at 3.21692v and resides in an interval f...

voice signal is measured at 3.21692v and resides in an interval from 3.20v to 3.30. How big is an interval? MAx possible voltage?

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