The motor is classified into the following categories
Types of DC Motors
- D.C Shunt Motor
- D.C Series Motor
- Self Excited D.C Motor
Types of AC Motors
- Synchronous motor
- Induction motor
1. DC Shunt Motor
In a D.C shunt, the motor torque is directly proportional to the current. In contrast for series wound D.C motor torque increases as the square of armature current. D.C motor to provide high start-up torque and high start-up loads. D.C shunt motor includes machine tools such as lathes and grinders or industrial application that includes fans and compressors.
2. DC Series Motor
This is similar to any other motor because the main function of the motor is to convert electrical energy into mechanical energy. D.C series motor operates on the principle of electromagnetic, whenever a magnetic field is formed approximately current-carrying conductor cooperates with an exterior magnetic field, thus rotating motion can be generated. Components of D.C series motor: rotor, commutator, stator, axle, field winding.
3. Self Excited D.C Motor
The motor in which current to the field winding or coils can be energized by a motor itself. In the self-excited D.C motor, the field coils may be connected parallel to the armature in the series or it may be partly connected in series and partly in parallel with the armature winding.
4. Synchronous Motor
The synchronous term comes from the speed of the rotor of the motor is the same as the rotating magnetic field. These motor are fixed speed motor, the speed is synchronized by the frequency. The synchronous motor requires an external source to start(not self-starting). Synchronous motors having the unique characteristics of operating under any electrical power factor. This is used in electrical power factor improvement.
5. Induction Motor
Induction motors are optimal for uni-directional and continuous operation. (i.e. conveyor system). Induction motors are operated by plug the motor into A.C supply, thus the motor can be easily operated.
Configuration and Components of Induction Motor
- Parallel shaft, right angle solid shaft, Right angle hollow gear types
- An electromagnetic brake is available.
- Round shaft ( no gear Types)
- Inverters sold separately.
The induction motor mainly consists of a flanged bracket, stator, motor case, output shaft, ball bearing, lead wires, Painting.
6. Special Purpose Motor
Stepper motor basics:- as although another electric motor, stepper motor having a stationary part (stator), rotational part (rotor), on the rotor there are teeth on which coil are wired while the rotor is permanent magnet or rotor, variable reluctance iron core.
Basic Principle:- energizing one or more rotor phases, a magnetic field is formed when current is flowing in the coil, rotor, or magnetic field.
Due to their properties, they are used where a simple position to control, ability to hold a position are including:
ATM machine: bill movement tray elevator, robot arms- end effectors, 3D printers, DSLR camera- aperture/ focus regulation.