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

Explain buffer storage, Discuss the layout configuration of FMS with neat a...

Discuss the layout configuration of FMS with neat and clean diagram? Write the disadvantages and advantages of FMS? Write the short note on following: a) Applications of FMS

Explain direct data addressing mode, Direct data addressing mode (with exam...

Direct data addressing mode (with examples) available in microprocessors. Direct Mode: Instruction comprises memory access. CPU accesses which location into memo

Calculate the new rotor current frequency, Induction motors are often brake...

Induction motors are often braked rapidly by a technique known as plugging, which is the reversal of the phase sequence of the voltage supplying the motor. Assume that a motor with

Explain the working of a darlington pair, Q. Explain the working of a darli...

Q. Explain the working of a darlington pair? This is two transistors connected together so that the current amplified by the first is amplified further by the second transistor

DC. motors, what''s the difference between DC. motors and AC. motors

what''s the difference between DC. motors and AC. motors

Newton''s laws of motion in terms of particle motion, 1. Sum of forces is z...

1. Sum of forces is zero velocity remains constant.[If the particle is initially at rest, it will remain at rest for as long as the sum of the forces is zero]. 2. Sum F of for

Refrigeration and airconditioning, Ask question #Minimum 100 words acceptTh...

Ask question #Minimum 100 words acceptThere are various refrigeration systems employing various methods. State any seven (7) refrigeration systems, mention the method(s) employed t

Determine the 50- hz applied voltage, Athree-phase, 440-V, 60-Hz, four-pole...

Athree-phase, 440-V, 60-Hz, four-pole induction motor operates at a slip of 0.025 at full load, with its rotor circuit short-circuited. This motor is to be operated on a 50-Hz supp

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Explain load flow analysis, Explain Load Flow Analysis The method commo...

Explain Load Flow Analysis The method commonly used for load flow analysis is the nodal analysis. The nodal analysis method is given in many books on circuit theory and is base

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