Dealing with IGBT Modules

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Separated by gate resistors The gate voltage of each IGBT can rise independent from the otherone. Note: The gate resistors must be tolerated < 1 %CGAEV GE 1V GE 2V GE nEWith individual gate resistors all IGBTs are independent from each otherIntroduction of Gate Resistors42
Separated by gate resistors All IGBTs still have different gate threshold voltages ∆V GE(th) But: The gate voltage of each IGBT can rise independently from the other ones. The higher Miller-Plateau will be reached after a short time ∆t 1 . Only smalldifferences in current sharing and switching losses between paralleled IGBTs.V GE∆V GE(th)∆t 1t∆t 2Introduction of Gate Resistors43
Page 1 and 2: Dealing with IGBT Modules1
Page 3 and 4: Dealing with IGBT Modules Motivatio
Page 5 and 6: Increased switching speed, decrease
Page 9 and 10: The comparison of stray inductances
Page 11 and 12: The mechanical design has a signifi
Page 13 and 14: Simulation of current distributionf
Page 15 and 16: For paralleling standard modules a
Page 17 and 18: Paralleled half bridge IGBT modules
Page 19 and 20: Comparison of different designs Two
Page 23 and 24: Different snubber networks are in u
Page 25 and 26: But still: the snubber networks nee
Page 27 and 28: These capacitors did not work satis
Page 29 and 30: After introduction of optimised snu
Page 31 and 32: Over voltages at the gate V GE > +/
Page 33 and 34: Gate clamping with “Schottky Diod
Page 35 and 36: Auxiliary PCB directly at the IGBT
Page 37 and 38: Taking thermal management into rega
Page 41: Hard connected Gates All IGBTs have
Page 45 and 46: The introduction of R Ex (≈ 10 %
Page 47 and 48: The introduction of R Ex leads also
Page 49 and 50: The introduction of clamping diodes
Page 51 and 52: PCB for paralleling IGBT close to t
Page 53 and 54: Auxiliary PCB directly at the IGBT
Page 55 and 56: Why symmetrical AC terminal connect
Page 57 and 58: AC link design Short connections wi
Page 59 and 60: Optimisation problem In order to op
Page 61 and 62: How to use single switch IGBT modul
Page 63 and 64: Comparison For GB modules the diode
Page 65 and 66: Advantages of paralleled half bridg
Page 69 and 70: Dealing with IGBT Modules For paral
Page 71 and 72: Document status:preliminaryDate of

Dealing with IGBT Modules

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