Review/Explain with the aid of sketches the following excitation methods for a synchronous motor. DC EXCITATION, DC BRUSHLESS, AC EXCITATION. Review/Explain three starting methods used with an induction motor.

Review/Explain with the aid of sketches the following excitation methods for a synchronous motor. DC EXCITATION, DC BRUSHLESS, AC EXCITATION. Review/Explain three starting methods used with an induction motor.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 6RQ: On average, how many degrees out of phase with each other are the start- and run-winding currents in...

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Concept explainers

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.

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Review/Explain with the aid of sketches the following excitation methods for a synchronous motor. DC EXCITATION, DC BRUSHLESS, AC EXCITATION.

Review/Explain three starting methods used with an induction motor.

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Step 1: Synchronous motor and its excitation :

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Step 2: DC excitation of synchronous motor :

VIEW

Step 3: Brushless excitation of synchronous motor :

VIEW

Step 4: AC excitation of synchronous motor :

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