Hello, readers welcome to the new post. In this post, we will discuss Difference between Synchronous and Induction Motor. A motor is a device employed to convert electrical power to mechanical. There are different types of motors according to construction work and application.
Here we cover details about the synchronous motor and induction motor and make comparisons among them. So let’s get started.
Difference between Synchronous Motor and Induction Motor
What is a Synchronous Motor?
AÂ synchronous motor has rotor rotation at synchronous speed for different loads and with connected to motors not crossing limiting value.
If the load on the shaft of synchronous motors is higher than the limited value motor becomes rest and the average torque produced will be zero.
The synchronous motor comes with a stator and rotor. The stator has 3 3-phase armature winding and gets power from a balanced 3-phase supply and the rotor comes with salient poles excited through DC curent for generating N and S poles alternatives.
synchronous motor, hs wound stator with same poles like rotor poles
 AC Electric Motor Working
The AC motors transform AC into mechanical energy with the use of electromagnetic induction phenomena.
These motors use a stator and rotor for working with AC curent and stator is static and the rotor is rotating.
Single or 3-phase AC motors are used according to applications. 3 Three-phase AC motors are best for uses that need bulk power transformation and for small power applications single-phase AC motors are used.
Single-phase AC motors are used in residential and commercial appliances.
What is an Induction Motor?
- The induction motors come with a stator and rotor. The stator has 3-phase winding and rotor windies are short-circled at the end.
- if stator winding gets energized from 3 phase supply rotating field is generated that rotates about the stator
- A rotating magentic field passes in air gaps and strikes rotor conductors that is static. So due to relative speed between rotating magentic field and static rotor conductors EMF is induced in rotor conductors.
- Curre flow in the rotor since its winding are short circuit.
- Current carrying rotor conductors put in the field generated by stator winding. In a result, torque is produced on the conductors of rotors, and due to torque rotors rotate in field direction but at less than synchronous speed.
Synchronous Motor Applications
- These are some applications of synchronous motors that are mentioned here.
- The main purpose of installation in different power systems is to maintain the power factor.
- These motors are also employed in voltage-regulating applications.
- It is used in such systems where less speed and higher loads are working.
- Compressors mostly consist of synchronous motors.
- Cranks, grinders, or where high power load is working where these motors are used.
Difference between Synchronous Motor and Induction Motor
Synchronous Motor
- This motor is double excited machine and its armature windings are connected with ac supply and field winding get supplied from a DC battery
- Its speed is not based on the load
- It is not self starting motor that needs an excitation source
- it is effective as compared to induction motors
- It works under different ranges of power factor values lagging and leading.
- There is no need for motion between the stator field and rotor for working this motors
- It is lower cost than an induction motor.
- It is a complicated structure of motors
- It has a higher starting torque than induction motors
- It needed DC excitation at the rotor
- Used for working of loads that needed constant speed, power factor correction of electrical systems
Induction Motor
- The induction motor is single excited machine and its stator winding is energized with ac supply
- Speed reduces with increases in load
- Induction motors are self-start
- It is less efficient than synchronous motors
- It works on lagging factors means its load is inductive.
- Relative motion between the stator RMF and the rotor needed for working of motors
- induction motor is a low-cost
- Its structure is low complicated than the Synchronous Motor
- It has less starting torque
- It is used for driving mechanical loads only.
Read also:
- What is Circle Diagram of Induction Motor – Definition, Construction & Its Parts
- Different Types of Induction Motor and Features
- Difference Between Single Phase and Three Phase Induction Motor
- Difference Between Slip Ring and Squirrel Cage Induction Motor
- What is the Maximum (Pullout) Torque in an Induction Motor
That is all about the Difference between Synchronous motors and Induction Motor have discussed all the paraments. So if you have any further queries ask in the comments. Thanks for reading have a good day. Thanks for reading see you next post.
