10 Things You Need to Know about Squirrel Cage vs Wound Rotor.
Electric motors are the foundation of most modern industrial machinery. Two types of electric motors are commonly used in industrial settings, the squirrel cage and wound rotor motors. While both serve the same general purpose, there are different operational and mechanical characteristics. In this article, we’ll be exploring 10 things you need to know about squirrel cage vs wound rotor motors.
1. Basic Differences.
The basic difference between squirrel cage and wound rotor motors is their construction. In a squirrel cage motor, the rotating part resembles a hollow cage set within a stationary outer shell. On the other hand, wound rotor motors contain an insulated wire wound around the rotor poles.
2. Ideal Applications.
Squirrel cage motors are ideal for high inertia loads, and they are also not prone to rotor winding failure due to their simple structure. On the other hand, wound rotor motors are preferred in high starting torque applications.
3. Starting Torque.
For high starting torque applications, wound rotor motors provide the ability for speed regulation by varying the rotor resistance. This method is known as slip control. Squirrel cage motors have a constant speed but offer high efficiency.
4. Energy Efficiency.
Squirrel cage motors are more energy efficient because they are less prone to energy loss in the rotor. Wound rotor motors are less efficient due to the increased number of components and energy lost in the slip rings, brushes, and rotor winding.
5. Maintenance.
Squirrel cage motors are easier to maintain and require less downtime for repairs. Wound rotor motors have more parts that require regular maintenance, including brushes, slip rings, and winding.
6. Cost.
Squirrel cage motors are relatively cheaper to make than wound rotor motors. This is because of their simple design and fewer components.
7. Noise Level.
Squirrel cage motors produce less noise because of their simple, stationary rotor structure. Wound rotor motors, on the other hand, have a moving rotor and produce more noise.
8. Variable Speed.
Wound rotor motors have the ability to vary the rotor resistance through slip control, making them ideal for variable speed applications. Squirrel cage motors are not ideal for variable speed applications.
9. Overload Capacity.
Wound rotor motors have a higher overload capacity because they can control the amount of current flowing through the rotor by slip control. In contrast, squirrel cage motors have a constant speed, which limits their ability to handle high current surges.
10. Ease of Use.
Squirrel cage motors are easier to use because they require less attention and monitoring due to their simple construction. Wound rotor motors require more attention and monitoring to maintain their slip ring and brush contacts.
Conclusion.
Squirrel cage motors and wound rotor motors have their unique features and benefits. The ideal choice would depend on the application and the operational requirements of the machine. Whichever motor you decide to use, it is essential to consult with an expert to ensure you are getting the right motor for your specific industry needs. For more information on the best motor options, contact us, and our team of experts will be glad to assist you in finding a reliable supplier that will meet your needs.
If you are looking for more details, kindly visit Squirrel Cage Vs Wound Rotor, Cage Rotor Motor, Disadvantage of Power Factor.