Design and analysis of a full bridge LLC DC-DC converter for auxiliary power supplies in traction

This paper focuses on an 8 kW LLC resonant full bridge DC-DC converter topology using a high frequency transformer for auxiliary power supply systems in traction. The full bridge DC-DC converter with the LLC resonant network has been tested under hard switching and zero current switching conditions with 100 kHz switching frequency. In addition to this, an observation made for the effect of dead time variation of the power switches to improve the overall system efficiency. This paper describes the efficiency of the ZCS full bridge converter by considering different input power levels and also compared with hard switched topology. This paper presents the operating principles, simulation analysis, and experimental verification for 3 kW to 8 kW LLC resonant full bridge converter with 1200 V/40 A IGBTs, and its efficiency comparison.

[1]  M Mermet-Guyennet.  New power technologies for traction drives , 2010, SPEEDAM 2010.

[2]  D. Dujic,et al.  Power electronic transformer (PET) converter: Design of a 1.2MW demonstrator for traction applications , 2012, International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion.

[3]  Yan Liang,et al.  Design of integrated passive component for a 1 MHz 1 kW half-bridge LLC resonant converter , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[4]  Drazen Dujic,et al.  Laboratory scale prototype of a power electronic transformer for traction applications , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[5]  I. Batarseh,et al.  Operation Mode Analysis and Peak Gain Approximation of the LLC Resonant Converter , 2012, IEEE Transactions on Power Electronics.

[6]  Dehong Xu,et al.  A two stage DC/dc converter with wide input range for EV , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[7]  M.Z. Youssef,et al.  A front end self-sustained LLC resonant converter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[8]  Parthasarathi Sensarma,et al.  Discontinuous conduction mode analysis of phase-modulated series resonant converter , 2017 .

[9]  Ray-Lee Lin,et al.  Design criteria for resonant tank of LLC DC-DC resonant converter , 2010, IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society.

[10]  J. Ferreira,et al.  A DC-DC Full-Bridge Hybrid Series Resonant Converter enabling constant switching frequency across wide load range , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.