Electric Power ›› 2020, Vol. 53 ›› Issue (10): 156-162.DOI: 10.11930/j.issn.1004-9649.201907027

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Performance Degradation Based Lifetime Evaluation of Power Electronic Devices

PAN Guangze1, ZHANG Zheng2, LUO Qin1, LI Xiaobing3, MENG Linghui1   

  1. 1. China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 510610, China;
    2. Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology, Guangzhou 510610, China;
    3. Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology, Guangzhou 510610, China
  • Received:2019-07-03 Revised:2019-07-19 Published:2020-10-05
  • Supported by:
    This work is supported by the National Key Research and Development Program of China (Research on Flexible DC Transmission Technology of UHV Large Capacity Long Distance Overhead Line, No.2016YFB0901002).

Abstract: Current lifetime evaluation methods are often ineffective for power electronic devices which have high reliability, long life, and multi-fault mode competition. Accordingly, a lifetime evaluation method based on performance degradation data is proposed. Such data is used to construct performance degradation and lifetime distribution models. Then, the model parameter estimation, model goodness-of-fit checking, and model optimization methods are derived. By considering the trends in the degradation of multiple performance parameters, a competitive failure model is constructed to achieve a fast evaluation for the lifetime of power electronic devices with high reliability, long life, and multi-fault mode competition. As an example, lifetime evaluation is carried out for an insulated gate bipolar transistor. The difference between the evaluation results and measured test results is small, which verifies that the proposed method is quite accurate and effective.

Key words: power electronic devices, performance degradation model, lifetime distribution model, competitive failure model, lifetime evaluation