What is an example of a doubly-excited machine?

What is an example of a doubly-excited machine? Correct Answer Synchronous motor

Synchronous motor:

  • The synchronous motor is known as a doubly-excited machine because its stator and rotor both are excited.
  • To achieve magnetic locking between stator and rotor, double excitation is needed.
  • The stator of the synchronous motor is supplied with a 3 ϕ supply while the rotor is excited by a DC source.

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