RFSynchronous vs. Induction Motor: Key Differences
electric motor
synchronous motor
induction motor
motor comparison
electrical engineering
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This article highlights the differences between synchronous motors and induction motors, two common types of electric motors.
Synchronous Motor vs. Induction Motor Comparison
| Feature | Synchronous Motor | Induction Motor |
|---|---|---|
| Starting | Not self-starting | Self-starting |
| Speed | Average speed is always synchronous; independent of load. | Normal speed is less than synchronous, and decreases as load increases. |
| Power Factor | Can operate at all power factors (lagging or leading). | Operates only at a lagging power factor. |
| Speed Control | Speed control is generally not a factor. | Speed can be controlled, particularly in smaller units. |
| Excitation | Requires a DC exciter. | No exciter is required. |
| Cost | More expensive to manufacture. | Much cheaper to manufacture. |
| Applications | Used for mechanical output and to improve power factor (as a synchronous condenser). | Primarily used to supply mechanical load. |
