Abstract:To overcome the rigid control of the classical drive method which used fixed resistance to drive IGBT, a variable gate resistance drive method was proposed. This method detected the change rate of collector current through the parasitic inductor of the IGBT module, and the closed-loop feedback was used to control this rate of change. All the expressions between voltage overshoot , overcurrent and di/dt were derived. Based on these expressions, the di/dt feedback control was designed. The feedback circuit selec… Show more
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