Machine-translated by Google. Questions are authored in English.
Top

Discussion

Several synchronous motors on separate machines can be made to run in exact step by

  • A.connecting their shafts together through a mechanical differential
  • B.using induction machines with rotor resistance control instead
  • C.feeding them from one converter in true synchronous mode
  • D.fitting each of them with its own rotor position sensor and inverter

Answer: C

A single frequency reference sets the speed of every machine, so the ratio between them is exact without any mechanical connection. Textile and paper machines used the arrangement long before electronic shaft schemes existed.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.