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

Discussion

Shoot-through in an inverter leg means

  • A.the dc link voltage rising above its rated value
  • B.the gate drive failing to turn a device on at all
  • C.both devices conducting and short-circuiting the link
  • D.the load current finding a path through the anti-parallel diodes

Answer: C

Correct answer: both devices conducting and short-circuiting the link

If the upper and lower devices of a leg conduct together, even briefly, they place a short circuit across the dc link and the current is limited only by stray impedance. Destruction follows in microseconds. Dead time is inserted between turning one off and the other on precisely to make this impossible.

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

Post your comment

Please log in or register to post a comment.