Dealing with IGBT Modules
Dealing with IGBT Modules
Dealing with IGBT Modules
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Why use a snubber? Due to stray inductances in the DC link, voltage overshoots occurduring switch off of the <strong>IGBT</strong>:vovershoot = Lstray× These voltage overshoots may destroy the <strong>IGBT</strong> module because theyare added to the DC-link voltage and may lead to V CE > V CEmaxdidtvCE= vovershoot+vDC−link The snubber works as a low pass filter and “takes over” thevoltage overshoot (caused by the energy which is stored inthe stray inductances)Motivation22