Synchronous Motor
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Consider a phasor diagram with normal excitation i.e. such a current through field winding which will produce flux that will adjust magnitude of Ebph same as Vph.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
When a d.c. motor or an induction motor is loaded, the speed of the motor drops. This is because the load torque demand increases than the torque produced by the motor.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
The various methods to start the synchronous motor are, 1. Using pony motors 2. Using damper winding 3. As a slip ring induction motor 4. Using small d.c. machine coupled to it.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Once magnetic locking is established, the rotor and stator poles continue to occupy the same relative positions.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Consider the rotating magnetic field as equivalent to physical rotation of two stator poles N1 and S1
Synchronous Motor
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Synchronous motor works on the principle of the magnetic locking.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
The synchronous motor construction is basically similar to rotating field type alternator. It consists of two parts
Synchronous Motor
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Due to interaction of three fluxes produced due to three phase supply, resultant flux has a constant magnitude and its axis rotating in space, without physically rotating the windings.
Synchronous Motor
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
We have seen the various features of a three phase alternator.
Subject and UNIT: Electrical Machines II: UNIT II: Synchronous Motor Engineering Electrical Machines - II
Engineering Electrical Machines - II : UNIT II : Synchronous Motor : Syllabus, Contents
Synchronization and Parallel Operation of Alternators | Electrical Machines
Subject and UNIT: Electrical Machines II: UNIT I: c. Synchronization and Parallel Operation of Alternators Engineering Electrical Machines - II
Engineering Electrical Machines - II : UNIT I : Synchronization and Parallel Operation of Alternators : Anna University Questions with Answers (Long Answered Questions)
Synchronization and Parallel Operation of Alternators | Electrical Machines
Subject and UNIT: Electrical Machines II: UNIT I: c. Synchronization and Parallel Operation of Alternators Engineering Electrical Machines - II
Engineering Electrical Machines - II : UNIT I : Synchronization and Parallel Operation of Alternators : Anna University Two Marks Questions & Answers