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

Power system, what is speed governing frenqency control

what is speed governing frenqency control

., ABOUT ASSIGNMENT ON MAGNETIC INDUCTION NEAR A LONG WIRE

ABOUT ASSIGNMENT ON MAGNETIC INDUCTION NEAR A LONG WIRE

Lda load accumulator direct instruction, LDA  Load Accumulator Direct Inst...

LDA  Load Accumulator Direct Instruction This instruction is used to copy  data from  memory whose  address is directly specified in the  instruction to th e accumulator. The i

Dc machine, why armature lamination notched in outer periphery

why armature lamination notched in outer periphery

Literature review - software defined radio, Literature Review - Software De...

Literature Review - Software Defined Radio In this section, first two methods to estimate signal to noise ratio (SNR) are reviewed and a few methods for modulation classificati

Issue in sub-transmission and distribution systems, Issue In Sub-Transmissi...

Issue In Sub-Transmission and Distribution Systems The major issue in Sub-transmission and Distribution systems or rather the issue confronting the power sector as an overall,

Cro, oscilloscope probes specification & performance

oscilloscope probes specification & performance

Open-loop control system, Q. Open-loop control system? An open-loop sys...

Q. Open-loop control system? An open-loop system is one in which the control action is independent of the output or desired result, whereas a closed-loop (feedback) system is o

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