Electric Power ›› 2023, Vol. 56 ›› Issue (5): 137-152.DOI: 10.11930/j.issn.1004-9649.202210121

• Power System • Previous Articles     Next Articles

Review on Failure Mode and Mechanism of Press-Pack IGBT and Thyristor Devices

LUO Haoze1, CHEN Zhong2, YANG Wei2, XIE Jia3, HU Di2, GUAN Weiping2   

  1. 1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;
    2. Electric Power Research Institute of State Grid Anhui Electric Power Co., Ltd., Hefei 230601, China;
    3. State Grid Anhui Electric Power Co., Ltd., Hefei 230022, China
  • Received:2022-10-28 Revised:2023-01-10 Accepted:2023-01-26 Online:2023-05-23 Published:2023-05-28
  • Supported by:
    This work is supported by Science and Technology Project of State Grid Anhui Electric Power Co., Ltd. (No.52120522000H).

Abstract: High voltage and large capacity press-pack insulated gate bipolar transistor (IGBT) devices and thyristor devices are the core devices in high-voltage DC transmission projects, which are of great significance for the efficient use of energy. The reliability of IGBT and thyristor has become a key problem for the stable and reliable operation of electrical equipment and even the entire power system. Firstly, starting from the traditional packaging structure of press-pack devices, this paper introduces the spring multi-chip packaging and convex multi-chip/single-chip packaging of press-pack devices, and compares the performance of three packaging structures. Then, the package-level failure mode and mechanism of press-pack devices are investigated, and the results show that the mismatch of the thermal expansion coefficient is the main reason for package-level failure. At the same time, the chip-level failures of IGBT and thyristor are also investigated, and it is found that electrical overstress is the main reason for chip-level failures. Thirdly, the new packaging structure and technology of press-pack devices are briefly introduced. Finally, future research focus on press-pack devices are discussed.

Key words: press-pack device, IGBT, thyristor, failure mode and mechanism, packaging structure