In this note, we are going to learn a topic called “What is DC Motor?” and Its Types, Working, and Applications as well. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.
Author Name: Arun Paul.
What is DC Motor?
A DC (Direct Current) Motor is an electrical device that converts direct current electricity into mechanical energy. It works on the principles of electromagnetic and is widely utilized in a variety of applications because to its simplicity, dependability, and efficiency.
Types of DC Motor
There are two types of DC Motor –
- Brushed DC Motor
- Series DC Motor: The field windings are connected in series with the armature windings. High starting torque, however speed varies according to load.
- Shunt DC Motor: The field windings are connected in parallel to the armature windings. Good speed regulation, poor starting torque.
- Compound DC Motor: A combination of series and shunt windings. Both series and shunt motors exhibit balanced properties.
- Brushless DC Motor: Electronic commutation replaces brushes and a commutator. Compared to brushed motors, they are more efficient, reliable, and long-lasting.
DC Motor Working
The DC motor is based on the Lorentz force principle, which asserts that a current-carrying conductor in a magnetic field experiences a force. When current runs through the armature winding, it creates a magnetic field around the conductor. This field interacts with the stator’s magnetic field, generating a force that turns the rotor.
Applications of DC Motor
- Used in Electric Vehicles, Fans, Blowers, Cranes, Elevators, Lifts etc