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

Discussion

An anti-parallel diode is placed across each switch in a voltage source inverter to

  • A.limit the rate of rise of voltage across the switch
  • B.carry the inductive load current when the switch is off
  • C.block the reverse voltage the device cannot withstand
  • D.provide the gate current the switch requires

Answer: B

A machine winding is inductive, so its current cannot stop when a switch opens and must find a path, which the diode gives it. Those diodes also carry the current during regeneration, when power flows back into the dc link.

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

Post your comment

Please log in or register to post a comment.