Advantages and Disadvantages of GTO
Advantages of GTO over Thyristor
- Commutation circuit is not needed
- Fast switching speed
- More di/dt at turn on
- Higher efficiency because losses in commutation circuit is eliminated
- Circuits using GTO are compact
- Lesser acoustical and electromagnetic noise due to elimination of choke of commutation
Disadvantages of GTO
- Higher latching and holding current
- Higher on state voltage drop and power losses
- Higher gate current
- Higher gate circuit losses
- Lower reverse voltage blocking capacity
Inspite of all above disadvantages,GTOs are being used in a variety of application such as variable frequency inverter circuits,electric traction and steel mills.Rating available are upto about 6kV and 6kA.
Written by John on October 18th, 2008 with
4 comments.
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#1. December 19th, 2009, at 10:51 PM.
list out the advantages of transistored inverter over thyristor inverter?