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AC Machine

AC Machines, including AC Motors and AC Generators, operate on alternating current and are essential in various applications from industrial to household use. They function based on electromagnetic induction, with advantages such as simpler construction and lower maintenance. The document highlights their importance in modern life and future trends towards energy efficiency and smart technology.

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6 views11 pages

AC Machine

AC Machines, including AC Motors and AC Generators, operate on alternating current and are essential in various applications from industrial to household use. They function based on electromagnetic induction, with advantages such as simpler construction and lower maintenance. The document highlights their importance in modern life and future trends towards energy efficiency and smart technology.

Uploaded by

mdmuzahidbari
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPTX, PDF, TXT or read online on Scribd
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AC Machine

Introduction
AC (Alternating Current) Machines operate
using alternating current where direction and
magnitude of current vary periodically. Major
types include AC Motors and AC Generators
(Alternators), and they are widely used in
industries, households, and transportation.
Table of contents
- Types of AC Machines
- Working Principle
- AC Motor Details
- AC Generator (Alternator)
- Advantages of AC Machines
- Applications
Types of AC Machines
AC Motors: Induction Motor (Asynchronous Motor) and Synchronous
Motor.
AC Generators: Alternators which supply electricity in power
systems.
Working Principle
Based on Electromagnetic Induction.
A rotating magnetic field induces current in the stator or rotor.
Key Law: Faraday’s Law of Electromagnetic Induction.
AC Motor Details
Induction Motor: Rotor current is induced without physical contact;
common in fans, pumps, and appliances.
Synchronous Motor: Rotor rotates at the same speed as the stator’s
magnetic field; used for constant speed applications.
AC Generator (Alternator)
Converts mechanical energy into AC electrical energy.
Consists of a rotating magnetic field and stationary armature.
Main source of electric power for grids.
Advantages of AC Machines
Simpler and robust construction.
Lower maintenance compared to DC machines.
Efficient for long-distance power transmission.
Applications
Industrial drives such as cranes and compressors.
Home appliances including refrigerators and washing machines.
Electric vehicles and railway traction.
Power generation plants.
Conclusion
AC Machines are fundamental to modern life,
with their efficient design and wide applicability
making them critical to industrial and domestic
usage. Future trends include more energy-
efficient and smart AC machines.
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