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This paper proposes a thermal network parameter estimation method to find RC parameters of the Cauer network using cooling curve of IGBT module. The solutions are developed by exploiting the relationship between thermal network parameters and time constants of junction temperature response curves. Experimental tests are performed to validate the accuracy of the developed method. Advantages of the...
The previous proposed method for thermal network parameter identification of IGBT module in [1] is based on the pre-knowledge of heat sink's thermal parameter, which neglected the aging effect of heat sink. This paper improved the identification method in [1] and make the improved method be applicable to systems without acknowledge of heat sink's thermal parameter. The theoretical analysis got the...
The thermal network parameters of IGBT module are wildly used for reliability evaluation, lifetime calculation, health monitoring, and predictive maintenance. Commonly used thermal network parameter identification methods include the finite element method (FEM) and the curve fitting of thermal impedance (Zth) method. The former method calculates directly using the IGBT geometric structure and material...
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