“The inverters only produce a limited amount of power, no matter how hard you step on the foot pedal, a car can only go so fast.”
Your statement is untrue!
Inverters convert 50 or 60 Hz power into DC power which is stored in a capacitor and chopped to reconstitute the power output to anything from 0 - 1000 Hz.
Inverters can EASILY be reprogrammed to to rapidly change the speed to 200% to 500% faster than normal in addition the safeties voltage, speed and current limiting reside in the inverter and can also be readily changed via software and changed back immediateley after “the event” just like nothing happened.
See ABB ACH 800 literature here:>> http://www05.abb.com/global/scot/scot239.nsf/veritydisplay/cb07980e2fd375bc8525733f004422cc/$File/3AUA489002B5311_ACH400_00_UM_REVE.pdf
read starting on page 103
Siemens controllers talk to ABB and other drives what you call “power inverters” all day long all over the world.
maybe your is a different world.
Lurking’
Per a previous post, centrifuges don't run on washing machine type motors. AC power is converted to DC and pulsed to an electromagnetic field "motor".
The Siemens PLC determines the speed of that pulse and that is where the Stuxnet worm was injected into code, the PLC code, not the inverter program.
The inverter "downstream" of the PLC can get all kinds of signal commands, but the highly specialized inverters on centrifuges have a very limited amount of pulses they can respond to.
No matter how hard you stomp on a tractor's accelerator it will only speed up as fast as the governor will allow.
The inverter's used, in order to be very stable and predictable and steady, are "choked" to ignore out of parameter signals.
Also, there are independent sensors that monitor and track and print out reports on the centrifuge's speed. That monitoring sensor system is not connected to the PLC or the inverter and reports exactly what happens, constantly. There is no "just like nothing happened". Any change is recorded and alarms triggered for any unplanned event.