A kind of IGBT burst pulse suppressing method

The invention discloses a kind of IGBT burst pulse suppressing method, realize minimum pulse width suppression based on software programming, the method includes: when service time Ton is less than 1/2 Dead Time T D , then service time Ton=0 is set；When service time Ton is more than 1/2 Dead Time T D , less than Dead Time T D , service time Ton=T is set D ；Service time Ton deducts maximum service time Tonmax less than 1/2 Dead Time T D , then Ton is equal to Tonmax, and otherwise Ton is equal to a switch periods time.One IGBT burst pulse suppressing method of the present invention, the suppression of real-time implementation minimum pulse width is carried out based on software programming, solve and prior art employs hardware to realize minimum pulse width suppression, there is the technical problem that the time changes, pass through programme-control, there is not the time fluctuation situation that device error causes, improve the safety and reliability of IGBT, thus improve the service behaviour of whole invertor operation.