Views: 22 Author: Site Editor Publish Time: 2025-11-05 Origin: Site
Principle Difference
· Excitation Generator: The rotor creates its magnetic field using an external electrical current (excitation). An Automatic Voltage Regulator (AVR) supplies and controls this current to maintain a stable output voltage.
· PM Inverter Generator: The rotor uses powerful permanent magnets to create a constant magnetic field. The raw, high-frequency AC power generated is converted to DC and then electronically "inverted" back to a perfect, stable AC output.
| Excitation Generator | PM Inverter Generator | |
| Pros | • Lower initial cost. • Robust and simple technology, easier to repair. | • Excellent voltage and frequency stability (clean power for sensitive electronics). • High fuel efficiency, especially at light loads. • Quieter operation and lighter weight for the same power output. |
| Cons | • Less stable output voltage under varying loads. • Less fuel-efficient, especially at partial load. • Heavier, noisier, and produces "dirtier" power unsuitable for some electronics. | • Higher initial cost. • More complex electronics, which can be more expensive to repair. |
