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3900W IGBT heat sink thermal analysis from lori

2019-06-22

IGBT heat sink Simulation module & Simulation Results


IGBT heat sink Fundamental Specification

Ambient temperature : 40℃

Analysis of customer supply model

IGBT heat sink material:AL6061- T6

Fin:zipper fin 

Fin Material : AL 1050

Use 5 heat pipes

The heat pipe is sandwiched between fin sheet and bottom plate

heat sink size:  512X230X125mm 

FIN thickness : 0.6mm   ,total 166 ps 

Fan specifications:SANYO 9G1212HG105 12CM 12V 0.98A  , 4pcs fans

Air volume:135CFM 

Wind pressure:125PA 

The model was placed 3cm away from the discrete hot body

Heat value of heat source:3900w

Two fin design structures :Open and close

    










IGBT heat sink fanIGBT heat sink fan specifications
IGBT heat sink simulated test model

IGBT heat sink simulated test model"

3900W heat source

                                       


IGBT heat sink simulated test model


                                     IGBT heat sink simulated test model

Open


IGBT heat sink simulated test model

                                           

   IGBT heat sink simulated test model

Close




IGBT heat sink thermal analysis result


  IGBT heat sink thermal analysis result(fin open)  

Flow model : Turbulent (zero-equation)


IGBT heat sink thermal analysis result

  IGBT heat sink thermal analysis result(fin open)

Flow model : Turbulent (zero-equation) 

Highest temperature of heating body: 123 ℃ (for reference only, please use actual measurement)


IGBT heat sink thermal analysis result

  IGBT heat sink thermal analysis result(fin close)

Flow model : Turbulent (zero-equation) 

The heatsink temperature distribution is up to 119 ℃  




Conclusion:  

Ambient temperature : 40℃

Maximum temperature of  IGBT heat sink (fin open):121 ℃

Maximum temperature of  IGBT heat sink (fin close):119 ℃


Heat pipe suitable for above 100 ℃ high temperature should be selected, otherwise the heat pipe may burn out.

The highest temperature below 125 ℃ is required by the customer.



  IGBT heat sink thermal analysis result(fin open)

Flow model : Turbulent (zero-equation) 

heatsink temperature distribution up to 121 ℃

  IGBT heat sink thermal analysis result(fin close)

Flow model : Turbulent (zero-equation) 



  IGBT heat sink thermal analysis result(fin close)

Flow model : Turbulent (zero-equation) 

Maximum high temperature of heating body: 121 ℃ (for reference only, please use actual measurement as main)


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