Igneous Posted September 5, 2003 Report Share Posted September 5, 2003 Has anyone an experience of connecting powerful IGBTs in-series to use them @ higher voltage than rated one??? (for example 400A 1200V). There are big problems with voltage drop distribution in transient modes caused by non-simultaneous turn-on and -off times... What can u advice me? Link to comment Share on other sites More sharing options...
marke Posted September 5, 2003 Report Share Posted September 5, 2003 Hello Igneous A large part of the secret is in the design of snubber circuits across each switching device that will reduce transient voltages due to differential switching times. Best regards,Mark. Mark Empson | administratorSkype Contact = markempson | phone +64 274 363 067LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | AuCom | Soft Starters Link to comment Share on other sites More sharing options...
vst1 Posted March 24, 2006 Report Share Posted March 24, 2006 do you mean to say using 1200v igbt to control 2400v dc link? then i have seen drives in which high voltage devices used in series (4 igbt in series.)do you need more info? Link to comment Share on other sites More sharing options...
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