- TL;DR Summary
- Synchronous Generator PMG Rotor Damaged
Generator - 1800rpm, 11kV, 656A. While running Gen, a large load was turned on, and excitation voltage went from 23V to 120V, but that's a normal situation that happens every time and on all Generators. But this time after turning on the large load, vibrations started increasing, and Gen tripped on high vibrations. When inspected PMG rotor magnets were broken inside the gen. We did all the testing and couldn't found anything. Does anyone has experienced a similar thing before?