An electric motor consists of three main parts that work together to convert electrical energy into mechanical energy. These are:
### 1. **Stator**
- **Description**: The stator is the stationary part of the motor and typically houses the coils of wire or windings. In most electric motors, the stator produces a magnetic field that interacts with the rotor to cause motion.
- **Function**: Its primary role is to generate a rotating magnetic field when connected to an external AC or DC power source. In a **DC motor**, it could contain permanent magnets, while in an **AC motor**, it usually has electromagnets or windings that are energized to create a magnetic field.
### 2. **Rotor**
- **Description**: The rotor is the moving part of the motor. It is located inside the stator and is mounted on the motor's shaft, which is connected to the machine or device requiring power.
- **Function**: The rotor interacts with the magnetic field generated by the stator, which causes it to rotate. This rotation produces the mechanical motion needed to do useful work, such as turning a fan or moving a conveyor belt.
### 3. **Commutator (for DC motors) or Slip Rings (for AC motors)**
- **Description**: The commutator or slip rings are part of the mechanism that supplies electric current to the rotor windings.
- In **DC motors**, a **commutator** ensures the current flowing through the rotor windings switches direction at the correct time to maintain consistent rotational movement.
- In **AC motors**, **slip rings** are used to transfer current to the rotor while allowing it to rotate freely.
- **Function**: They facilitate the transfer of current between the stationary stator and the rotating rotor, ensuring the magnetic forces are correctly aligned for continuous motion.
### Summary
- **Stator**: Creates the magnetic field (stationary part).
- **Rotor**: Rotates in response to the magnetic field (moving part).
- **Commutator/Slip Rings**: Manage the electrical connection for rotor movement.
These parts together form the core mechanism that enables an electric motor to operate efficiently.