Structure design and analysis of high voltage IGBTs series connection experimental platform

Insulated Gate Bipolar Transistor (IGBT) has the advantages of high rated voltage, high rated current, high switching speed and easy to drive. But a single IGBT still cannot meet the needs of the high-voltage converters at present. IGBT series and parallel connection can greatly extend the application of IGBT because it can effectively improve the system voltage and current capacity. Generally, the volume of high voltage IGBTs series connection converter is large because of the insulation and thermal performance requirements. It means that the bus bar structure is complex, and the stray parameters of the commutating loops, especially the stray inductance, will significantly influence the switching processes. It becomes one of the key points for the safe operation of the converter. In this paper, the design principles for complex physical bus bar are presented. Based on the finite element analyses, the bus bar structure of a high voltage IGBTs series connection experimental platform is designed and improved. The performance of the improved bus bar structure is verified by simulations and experiments.

[1]  Li Yaohua,et al.  The IGCT test platform for voltage source inverters , 2003, The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003..

[2]  C. Abbate,et al.  Series connection of high power IGBT modules for traction applications , 2005, 2005 European Conference on Power Electronics and Applications.

[3]  A. Piazzesi,et al.  Series connection of 3.3 kV IGBTs with active voltage balancing , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[4]  D. Chamund,et al.  Review of series and parallel connection of IGBTs , 2006 .

[5]  K. Matsuse,et al.  Voltage balancing method for IGBTs connected in series , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[6]  R. Withanage,et al.  Novel voltage balancing technique for series connection of IGBTs , 2007, 2007 European Conference on Power Electronics and Applications.

[7]  Zhengming Zhao,et al.  Design, simulation and analysis of the low stray inductance bus bar for voltage source inverters , 2011, 2011 International Conference on Electrical Machines and Systems.

[8]  M. Fasching,et al.  Series connection of high voltage IGBT modules , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[9]  Guozhu Chen,et al.  Study and Design of Noninductive Bus bar for high power switching converter , 2006, 2006 CES/IEEE 5th International Power Electronics and Motion Control Conference.