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Electromechanical Energy Conversion (EGYA3001 ) Assignment 2

Electromechanical Energy Conversion (EGYA3001 ) Assignment 2. Shelley Rean Seemongal ID# 55089. Transformer. A transformer can be classified as a device that transfers electric energy from one circuit to another, usually with a change in voltage.

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Electromechanical Energy Conversion (EGYA3001 ) Assignment 2

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  1. Electromechanical Energy Conversion (EGYA3001)Assignment 2 Shelley Rean Seemongal ID# 55089

  2. Transformer • A transformer can be classified as a device that transfers electric energy from one circuit to another, usually with a change in voltage. • This device can have two or more coils that share a common magnetic field .

  3. The Primary and Secondary coil are neatly wrapped around the Ferro-magnetic core as indicated above. What generally occurs is the primary coil takes in a time varying voltage and creates a time varying magnetic field. Then the Ferromagnetic core channels this magnetic field through the secondary coil. Finally this secondary coil then converts the time varying magnetic field back into a time varying voltage.

  4. The sinusoidal voltage on the secondary side is proportional to the sinusoidal voltage on the primary side. • The constant of proportionality, is determined by the ratio of the number of turns on the secondary side to the number of turns on the primary side. • The turns ratio,  is the voltage waveform over the secondary coil, and  is the voltage waveform over the primary coil.

  5. Electric Motor • This can be defined as an electric machine that converts electrical energy to mechanical energy. The motor comprises of: • Armature/Rotor • Commutator • Brushes • Axle • Field magnet • DC power supply of some sort

  6. Electric AC motors generally use secondary and primary winding (magnet), the primary is attached to wall power and is energized. The secondary receives energy from the primary without directly touching it. This is done using the complex phenomena known as induction.

  7. Generator

  8. The generator is a device used to transform mechanical to electrical energy with the assistance of a reciprocating engine generally a steam turbine ,the generator forces electric current to flow through an external circuit. The previous images indicates how the system works.

  9. References • http://www3.nd.edu/~lemmon/courses/ee224/web-manual/web-manual/lab8b/node5.html • http://www.howstuffworks.com/transformer-info.htm

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