I've just purchased the TBM 900 a few days ago as well, been doing a few flights so far, but today I've had the same happening (the second time already).
I was cruising at FL280, no indication that anything was abnormal, when out of nowhere Torque shot up to way over 300% and my plane immediately dived nose down. I immediately did a cut-off and recovered, but wasn't able to re-start the engine. Only after resetting failures within the X-Plane menu I was able to re-start the engine.
All I can see in the Log is the following line:
2020-01-14 12:48:35 TBM900[elec.c:1210]: MAIN GEN tripped (47.1A, 28.4V, rpm: 0)
So my question is, what exactly is causing it? I am using accelerated wear, but the airframe is new. After landing I also couldn't find anything in the Maintenance tab that was broken. Only the Turbine seems to have taken some slight damage.