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Question 8 of 10

What happens if power to the magnetic bearings fails suddenly?

The magnets carrying the rotor's weight need no power, and two backup bearings catch the rotor.

Michael Pratt, CEO · Pulsar demo, 23 Sep

The full answer

The permanent magnets that carry the rotor's weight need no power. If the active magnetic bearings fault, an emergency safety bearing catches the rotor, with a separate touchdown bearing behind it. The control system can then bring the rotor down safely, and if the grid is disconnected, the stored energy can be dumped through an electric brake resistor.

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