JNTUK R20 B.Tech EEE 2-2 Synchronous Machines Material/ Notes PDF Download

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JNTUK R20 B.Tech EEE 2-2 Synchronous Machines Material/ Notes PDF Download: The JNTUK R20 B.Tech Synchronous Machines Material encompasses crucial aspects of synchronous machines pertinent to second-year, second-semester students. It delves into understanding the functioning of 3-phase induction motors and evaluates their performance in terms of torque and slip. Additionally, it covers the torque production mechanism of single-phase induction motors. The material also elucidates on the principles of electromotive force (emf) generation, the effects of armature reaction, and methods for determining voltage regulation in synchronous generators. Furthermore, it explores parallel operation and strategies for controlling real and reactive powers in synchronous generators.

JNTUK R20 B.Tech 2-2 Synchronous Machines Material – Units

Unit 1 Syllabus PDF Download | JNTUK R20 B.Tech 2-2 Synchronous Machines Material

3-phase induction motors: Construction details of squirrel cage and slip ring induction motors – production of rotating magnetic field – the principle of operation – Equivalent circuit –phasor diagram- slip speed-rotor emf and rotor frequency – rotor current and pf at a standstill and during running conditions – rotor power input, rotor copper loss and mechanical power developed and their interrelationship.

Unit 2 Syllabus PDF Download | JNTUK R20 B.Tech 2-2 Synchronous Machines Material

Characteristics and testing methods of induction motors: Torque equation – expressions for maximum torque and starting torque – torque slip characteristic – double cage and deep bar rotors – crawling and cogging – speed control of induction motor with V/f control method – no load and blocked rotor tests – circle diagram for predetermination of performance – induction generator operation (Qualitative treatment only)

Unit 3 Syllabus PDF Download | JNTUK R20 B.Tech 2-2 Synchronous Machines Material

Starting methods of 3-phase induction motors: Methods of starting of three phase Induction motors: DOL, Autotransformer, Star-Delta, and rotor resistance methods.

Single phase induction motors: Constructional features- equivalent circuit- problem of starting-double revolving field theoryMethods of starting. AC series motors.

Unit 4 Syllabus PDF Download | JNTUK R20 B.Tech 2-2 Synchronous Machines Material

Construction, operation, voltage regulation and parallel operation of synchronous generator: Constructional features of non-salient and salient pole machines –types of armature windings – distribution, pitch and winding factors – E.M.F equation –improvements of waveform and armature reaction –phasor diagrams- voltage regulation by synchronous impedance method – MMF method and Potier triangle method– two reaction analysis of salient pole machines and phasor diagram.

Parallel operation with infinite bus and other alternators – synchronizing power – load sharing – control of real and reactive power – numerical problems.

Unit 5 Syllabus PDF Download | JNTUK R20 B.Tech 2-2 Synchronous Machines Material

Synchronous motor – operation, starting, and performance: Synchronous motor principle and theory of operation – phasor diagram – starting torque – variation of current and power factor with excitation – capability curves – synchronous condenser – mathematical analysis for power developed – hunting and its suppression – methods of starting – applications.

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JNTUK R20 B.Tech 2-2 Synchronous Machines Notes – Outcomes

• Describe how three-phase induction motors operate and evaluate their performance.
• Investigate the relationship between torque and speed, analyzing the performance of both induction motors and generators.
• Implement techniques for starting single-phase induction motors effectively.
• Design windings and predict the regulation of synchronous generators.
• Explain the hunting phenomenon and apply methods for starting and correcting power factors with synchronous motors.