cylindrical rotor machine

Solved 3 The Synchronous Reactance Of A Cylindrical Roto

The Synchronous Reactance Of A Cylindrical Rotor Machine Is 10 Pu The Machine Is Connected To An Infinite Bus Whose Voltage Is 1 Pu Through An External Reactance Of 035 Pu For A Power...

Synchronous Machines Cylindrical and Salient Pole

A three-phase 50 Hz star-connected cylindrical-rotor synchronous machine is running as a motor The machine is operated from a 66 kV grid and draw current at unity power factor UPF The...

Design of Synchronous Machine

machine to operate in synchronism The synchronizing power is inversely proportional to the synchronous reactance and hence the machines designed with higher value air gap flux density will have better ability to operate in parallel with other machin Following are the usual B av assumed Cylindrical rotor machine 055 to 065 wb/m2...

JPH1189132A

57 Problem To provide a cylindrical rotor of a rotating electric machine capable of increasing a short circuit ratio without increasing cost When a magnetic pole center direction of a cylindrical rotor 1 of a rotating electric machine is a d-axis and a direction between magnetic poles is a q-axis a slot 5 closest to the q-axis has a deeper structure than slots 2 3 and 4...

Construction of Alternator Electrical4U

Oct 25 2020 0183 32 The cylindrical rotor type machine has a uniform length in all directions giving a cylindrical shape to the rotor thus providing uniform flux cutting in all directions The rotor in this...

PDF Electrical Machines II 3 Synchronous Generator

Electrical Machines II Prof Krishna Vasudevan Prof G Sridhara Rao Prof P Sasidhara Rao 3 Synchronous Generator Operation 31 Cylindrical Rotor Machine Ixa xa xl ra Ixl I Et E Ira V V Load A Et E I σ a b phasor diagram for R load xs ra I Et IZs IXs Zs V Et V Load φ Ι...

Solved A Cylindrical Rotor Machine Connected To An Infini

A cylindrical rotor machine connected to an infinite bus bar is delivering active power of 11 pu and reactive power of 03 pu If the power angle is 40® compute the excitation voltage Pmax and the machine s synchronous reactance...

What is cylindrical rotor machine

In cylindrical rotor as it rotates the air gap between the rotor and stator doesnt change due to its cylindrical shape but for salient pole machine due to its shap the air gap changes as it...

A Cylindrical Rotor Synchronous Generator Design for Small

Sep 06 2018 0183 32 A Cylindrical Rotor Synchronous Generator Design for Small Hydro Power Plants Abstract This paper presents an alternative way of application of cylindrical pole synchronous machine of average speed to small hydro power plants The aim of the proposed design is to reduce the electrical machine...

Construction of Three Phase Synchronous Machines

Cylindrical Rotor Cylindrical-rotor machines are also known as non-salient pole rotor machine The construction of the rotor is such that it forms a smooth cylinder It has no physical poles as in the salient-pole construction These rotors are made up from solid forgings of high-grade nickel-chrome-molybdenum steel...

III Synchronous Motors

A wound rotor rotating field which has the same number of poles as the Assume that the motor is of cylindrical rotor type Neglect all loss Solution Rated kVA 3- phase= S = 1492 Rated kVA per phase = power converted by the machine is constant since the power the voltage and the motor speed are constant Thus...

Difference between Cylindrical and Salient Pole Rotor

Apr 25 2018 0183 32 In general the Cylindrical Rotor type machines are confined to 2 and 4 pole turbine generators while salient pole types are built with 4 poles upwards and include most classes of duty Both classes of machine...

PDF Electrical Machines II 3 Synchronous Generator

Electrical Machines II Prof Krishna Vasudevan Prof G Sridhara Rao Prof P Sasidhara Rao 3 Synchronous Generator Operation 31 Cylindrical Rotor Machine Ixa xa xl ra Ixl I Et E Ira V V...

Construction of a Synchronous Machine

The cylindrical rotor type alternator has two or four poles on the rotor Such a construction provides a greater mechanical strength and permits more accurate dynamic balancing The smooth rotor of the machine...

SYNCHRONOUS GENERATOR INTRODUCTION AND

fig Show end views of 2 pole and 4 pole cylindrical rotors cylindrical-rotor machines are driven by steam or gas turbin cylindrical-rotor synchronous generators are called turboalternator or turbogeneratorsuch machine are always horizontal configuration installationthe machine are built in a number of ratings from 10MVA to 1500MVA...

Cylindrical Rotor Synchronous Machine L 16 Electrical

This is the GATE 2021 Free Crash Course Ummeed taken by Varun Sir In this live session Cylindrical Rotor Synchronous Machine is covered Use Referral Co...

What are the advantages of a round rotor generator than a

Thus salient pole rotors are well suited to low speed large dia machines and smooth cylindrical rotors for high speed small dia machin Good day Cite 3 Recommendations...

Synchronous Machines

Figure 5 An elementary cylindrical rotor synchronous machine From Reference 1 the torque produced by the cylindrical rotor machine is F F Pu T s R o dev g D 2 sin Eq 8 where T dev developed torque P = number of poles D = rotor diameter = length of rotor axial g = length of gap...

ELECTRICAL MACHINE

cylindrical rotor theory phasor diagram open circuit short circuit characteristics armature reaction reactance synchronous reactance SCR load characteristics potier reactance voltage regulation EMF method MMF method modified MMF method ZPF method power angle characteristics 5-39 MODULE-II...

Cylindrical Rotor Alternator Questions

Jan 02 2015 0183 32 Cylindrical Rotor Alternator In this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machin This quiz section consists of total 15 questions...

Rotor Pole

The cylindrical rotor structure leads to quiet operation and increased output power and efficiency Unlike the claw-pole alternator the length of the machine can be increased to get higher output power at a higher efficiency The efficiency is higher since the effect of the end windings on the machine performance is less in a machine with a...

Synchronous Machines Notes part1 electric equipment

Mar 28 2015 0183 32 Nonsalient pole or Cylindrical rotor or Round rotor Machines These machines are having cylindrical smooth rotor construction with distributed field winding in slots This type of rotor construction is employed for the machine driven by steam turbin 1 Construction of Hydro-generators These types of machines...

Salient pole rotor vs non

Cylindrical rotors are used in high speed electrical machines usually 1500 RPM to 3000 RPM Windage loss as well as noise is less as compared to salient pole rotors Their construction is robust as compared to salient pole rotors Number of poles is usually 2 or 4 Damper windings are not needed in non-salient pole rotors...

PDF DESIGN OF ELECTRICAL MACHINES RA M

The limiting value of peripheral speed is 175 m/sec for cylindrical rotor machines and 80 m/sec for salient pole machin 7 Write the expression for air-gap length in cylindrical rotor machine Define short circuit ratio of a synchronous gemeratorThe short circuit ratio SCR of a synchromous machine is define as the ratio of field current...

JPH1189132A

57 Problem To provide a cylindrical rotor of a rotating electric machine capable of increasing a short circuit ratio without increasing cost When a magnetic pole center direction of a cylindrical rotor 1 of a rotating electric machine...

Construction of Three Phase Synchronous Machines

Cylindrical Rotor Cylindrical-rotor machines are also known as non-salient pole rotor machine The construction of the rotor is such that it forms a smooth cylinder It has no physical poles as in the salient-pole construction These rotors...

The Synchronous Machine

a salient pole machine such as Fig 1 the rotor is not cylindrical and the air gap length depends on the angle with respect to the rotor axis The expression for torque and power is more complex in a salient pole machine and the maximum torque typically occurs at a smaller value of δ...

Cylindrical grinding machines JUNKER Group

External and internal grinding processes are also possible and can be combined Typical workpieces machined on cylindrical grinding machines include all kinds of shafts and bolts such as gear turbocharger and rotor shafts The cylindrical grinding machines from JUNKER and ZEMA are ideal for prototype small and large scale production...

Electrical Machines

Machines with cylindrical rotors are typically found in higher speed higher power applications such as turbogenerators Using 2 or 4 poles these machines rotate at 3600 or 1800 rpm with 60hz systems Remember that machine power is a function of the size of the machine If a high power high speed machine...

Solved 3 The Synchronous Reactance Of A Cylindrical Roto

The Synchronous Reactance Of A Cylindrical Rotor Machine Is 10 Pu The Machine Is Connected To An Infinite Bus Whose Voltage Is 1 Pu Through An External Reactance Of 035 Pu For A Power Output Of 075 Pu The Power Angle Is Found To Be 32 176 A Find The Excitation Voltage Ef And The Pullout Power Pmax B For The Same Power Output The...

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