Which type of rotor is commonly used in BLDC motors?a.Wound rotorb.Induction rotorc.Permanent magnet rotord.Squirrel cage rotor

Common Type of Rotor in BLDC Motors

The type of rotor that is commonly used in Brushless DC (BLDC) motors is the Permanent Magnet rotor.

Explanation

1. Permanent Magnet Rotor:

   • Permanent magnet rotors utilize magnets that create a constant magnetic field. This type of rotor allows for efficient operation of BLDC motors, as the interaction between the magnetic fields of the rotor and the stator generates torque. The use of permanent magnets is a defining characteristic of BLDC motors, leading to high efficiency and performance.

2. Wound Rotor:

   • This type involves coils of wire to create a magnetic field. It is not typical for BLDC motors, as these motors rely on permanent magnets instead.

3. Induction Rotor:

   • Induction rotors are primarily found in induction motors, which differ from BLDC motors. They work on the principle of electromagnetic induction and do not utilize permanent magnets.

4. Squirrel Cage Rotor:

   • This is typically a type of rotor found in induction motors, which again is not relevant for BLDC motors.

Conclusion

In summary, the correct answer is: c. Permanent magnet rotor

BLDC motors are specifically designed using this type of rotor for optimal performance.