MedVision ad

AC and DC Motors and Generators (1 Viewer)

yxs

Member
Joined
Dec 10, 2008
Messages
35
Gender
Female
HSC
2009
Hi Guys!

What are the main differences between motors and generators? and what are the differences between AC motors (or generators) and DC motors (or generators)?

Thanks in advance :)
 

Fortify

♪웨딩드레스
Joined
Mar 20, 2007
Messages
1,281
Gender
Male
HSC
2009
Motors - Electrical Energy -> Mechanical Energy
Generators - Mechanical Energy -> Electrical Energy

AC - Slip Ring Commutator
DC - Split Ring Commutator
 

helper

Active Member
Joined
Oct 8, 2003
Messages
1,183
Gender
Male
HSC
N/A
AC motors also may be induction motors and they need to be looked at.
 

annabackwards

<3 Prophet 9
Joined
Jun 14, 2008
Messages
4,670
Location
Sydney
Gender
Female
HSC
2009
Structure wise:

Similarities
• A stator provides a magnetic field
• A rotor that rotates within the magnetic field.
• The magnetic field may be supplied either by permanent magnets or by electromagnets.
• The rotor in both an electric motor and a generator consists of coils of wire wound on a laminated iron armature and connected through brushes to an external circuit.
• DC motor and generator’s rotor coils are connected to the external circuit through a split-ring commutator.
• An AC generator is different as its rotor coils are connected to the external circuit through slip rings. An AC induction motor is different from a generator as its rotor coils are not connected to an external circuit and its field is always supplied by electromagnets.

Differences
• The function of an electric motor is the reverse of the function of a generator. An electric motor converts electrical energy into mechanical energy.
• A generator converts mechanical energy into electrical energy.
• A motor rotates when current is supplied while a generator supplies current when rotor is made to rotate.

From this, as Fortify said:
Motors convert Electrical Energy to Mechanical Energy while Generators convert Mechanical Energy to Electrical Energy
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top