What is the use of the various components of the electric generator and the electric motor ?
What is the use of the various components of the electric generator and the electric motor ?
Components of an Electric Generator:
Field: This is the device that produces magnetic flux when exposed to voltage. It consists of multiple coils of conductors that all work together when the source voltage is received – a process referred to as excitation.
Armature: The armature is the ultimate source of the generator’s output voltage. The magnetic flux in the field facilitates this output. The armature consists of a battery of wire coils, each of which can carry the generator’s full rated voltage.
Prime Mover: The prime mover is a type of turbine used to drive the AC generator. It could consist of a gas, steam, hydraulic, or wind turbine, for example. Some systems may even have redundant backup turbines.
Rotor: As the name suggests, the rotor is the chief rotating component of the generator. It is driven into motion by the prime mover. Depending on the system’s overall design, the rotor may be the armature or the field. The latter is more common in today’s systems.
Stator: The stator is the stationary design element of the system. It works with the rotor and, like the rotor itself, it can be either the field or the armature.
Slip Rings: Slip rings are specialized electrical connectors that facilitate power transference to and from the rotor. An individual slip ring is a circular conductor bound to the rotor windings, but insulated from the shaft.
Shaft Bearings: The shaft connects the prime mover and the rest of the generator. A series of bearings are precisely positioned to structure the relative motion of the system’s moving parts. This helps cut down on friction and reduce “wear and tear.”
Electrical Motor components: 1) Enclosure 
- Holds parts together
- Helps with heat dissipation
- protects internal components from the environment hazard.
2) Stator or winding 
- “Stationary” part of the motor sometimes referred to as “the windings”.
- Slotted cores made of thin sections of soft iron are wound with insulated copper wire to form one or more pairs of magnetic poles
3) Rotor 
- “Rotating” part of the motor.
- Magnetic field from the stator induces an opposing magnetic field onto the rotor causing the rotor to“push” away from the stator field.
4) Bearing 
- Sleeve Bearings
– Standard on most motors
– Quiet
– Horizontal shafts only
– Oil lubricated - Ball (Roller) Bearings
– Support shaft in any position
– Grease lubricated
– Many come sealed requiring no maintenance
5) Wound rotor motor 
- Older motor designed to operate at “variable speed”
- Advantages
– Speed Control, High Starting Torque, Low Starting Current
- Disadvantages
– Expensive, High Maintenance, Low Efficiency
6) Terminal box 
- Point of connection of electrical power to the motor’s stator windings.
7) Eye bolt 
- Used to lift heavy motors with a hoist or crane to prevent motor damage
Field: This is the device that produces magnetic flux when exposed to voltage. It consists of multiple coils of conductors that all work together when the source voltage is received – a process referred to as excitation.
Armature: The armature is the ultimate source of the generator’s output voltage. The magnetic flux in the field facilitates this output. The armature consists of a battery of wire coils, each of which can carry the generator’s full rated voltage.
Prime Mover: The prime mover is a type of turbine used to drive the AC generator. It could consist of a gas, steam, hydraulic, or wind turbine, for example. Some systems may even have redundant backup turbines.
Rotor: As the name suggests, the rotor is the chief rotating component of the generator. It is driven into motion by the prime mover. Depending on the system’s overall design, the rotor may be the armature or the field. The latter is more common in today’s systems.
Stator: The stator is the stationary design element of the system. It works with the rotor and, like the rotor itself, it can be either the field or the armature.
Slip Rings: Slip rings are specialized electrical connectors that facilitate power transference to and from the rotor. An individual slip ring is a circular conductor bound to the rotor windings, but insulated from the shaft.
Shaft Bearings: The shaft connects the prime mover and the rest of the generator. A series of bearings are precisely positioned to structure the relative motion of the system’s moving parts. This helps cut down on friction and reduce “wear and tear.”
Electrical Motor components: 1) Enclosure
- Holds parts together
- Helps with heat dissipation
- protects internal components from the environment hazard.
- “Stationary” part of the motor sometimes referred to as “the windings”.
- Slotted cores made of thin sections of soft iron are wound with insulated copper wire to form one or more pairs of magnetic poles
- “Rotating” part of the motor.
- Magnetic field from the stator induces an opposing magnetic field onto the rotor causing the rotor to“push” away from the stator field.
- Sleeve Bearings
– Standard on most motors
– Quiet
– Horizontal shafts only
– Oil lubricated - Ball (Roller) Bearings
– Support shaft in any position
– Grease lubricated
– Many come sealed requiring no maintenance
- Older motor designed to operate at “variable speed”
- Advantages
– Speed Control, High Starting Torque, Low Starting Current
- Disadvantages
– Expensive, High Maintenance, Low Efficiency
6) Terminal box
- Point of connection of electrical power to the motor’s stator windings.
7) Eye bolt
- Used to lift heavy motors with a hoist or crane to prevent motor damage
