Optimisation of the reverse conducting IGBT for zero-voltage switching applications such as induction cookers

The reverse conducting-IGBT (RC-IGBT) is a well suited device for soft switching applications, that is, zero voltage switching (ZVS). However, standard RC-IGBTs are optimised for hard switching, which shows different switching waveforms compared with soft switching. In this study, the optimisation of the RC-IGBT is described for soft switching applications using the example of an induction cooker. The investigated induction cooker is implemented by using the single-ended quasi-resonant topology. Simulations show that main losses of the induction cooker occur in the induction coil and the RC-IGBT (power switch). The performance of the coil can be improved mainly by minimising the coil resistance. The IGBT-optimisation is based on the reduction of tail current in the soft switching mode. The IGBT thickness is decreased and the local lifetime is used to achieve lower tail current. A reduction of the overall losses by 30% is achievable. As a result, the cooling system of the IGBT can be smaller and cheaper.

[1]  M.S. Adler,et al.  The insulated gate transistor: A new three-terminal MOS-controlled bipolar power device , 1984, IEEE Transactions on Electron Devices.

[2]  Fred C. Lee,et al.  Resonant Switches - A Unified Approach to Improve Performances of Switching Converters , 1984, INTELEC '84 - International Telecommunications Energy Conference.

[3]  Jung-Min Kwon,et al.  Single-Switch Quasi-Resonant Converter , 2009, IEEE Transactions on Industrial Electronics.

[4]  F. Monterde,et al.  A comparative study of resonant inverter topologies used in induction cookers , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[5]  Robert L. Steigerwald,et al.  High-Frequency Resonant Transistor DC-DC Converters , 1984, IEEE Transactions on Industrial Electronics.

[6]  J.D. Plummer,et al.  Insulated-gate planar thyristors: I—Structure and basic operation , 1980, IEEE Transactions on Electron Devices.

[7]  J. Burdío,et al.  Simple resistance calculation in litz-wire planar windings for induction cooking appliances , 2005, IEEE Transactions on Magnetics.

[8]  D. Sinha,et al.  Computation of inductance and AC resistance of a twisted litz-wire for high frequency induction cooker , 2010, 2010 International Conference on Industrial Electronics, Control and Robotics.

[9]  Fred C. Lee,et al.  Resonant switches - Topologies and characteristics , 1985, 1985 IEEE Power Electronics Specialists Conference.

[10]  O. Hellmund,et al.  New IGBT Concepts for Consumer Power Applications , 2007, 2007 IEEE Industry Applications Annual Meeting.

[11]  J. Oehmen,et al.  Reverse Conducting IGBT - A new Technology to Increase the Energy Efficiency of Induction Cookers , 2008, 2008 IEEE Power Electronics Specialists Conference.

[12]  B.K. Bose,et al.  Need a Switch? , 2007, IEEE Industrial Electronics Magazine.

[13]  A. Salih.  IGBT for high performance induction heating applications , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[14]  S. Voss,et al.  Optimisation of quasi-resonant induction cookers , 2013, 2013 15th European Conference on Power Electronics and Applications (EPE).

[15]  B. J. Baliga,et al.  Enhancement- and depletion-mode vertical-channel m.o.s. gated thyristors , 1979 .

[16]  Dehong Xu,et al.  Hard switching and soft switching inverters efficiency evaluation , 2008, 2008 International Conference on Electrical Machines and Systems.

[17]  B.J. Baliga,et al.  "Insulated gate bipolar transistor (IGBT) with a trench gate structure " , 1987, 1987 International Electron Devices Meeting.

[18]  K.W. Chan,et al.  Development of a commercial induction cooker , 2009, 2009 3rd International Conference on Power Electronics Systems and Applications (PESA).

[19]  Tanaka Tatsuo,et al.  A new induction cooking range for heating any kind of metal vessels , 1989 .

[20]  U. Schlapbach,et al.  The Bi-mode Insulated Gate Transistor (BIGT) a potential technology for higher power applications , 2009, 2009 21st International Symposium on Power Semiconductor Devices & IC's.

[21]  Mahdi Akhbari,et al.  New approach in design of planar coil of induction cooker based on skin and proximity effects analysis , 2009, 2009 IEEE International Conference on Industrial Technology.

[22]  Mutsuo Nakaoka,et al.  Performance evaluations of single-ended quasi-load resonant inverter incorporating advanced-2nd generation IGBT for soft switching , 1992, Proceedings of the 1992 International Conference on Industrial Electronics, Control, Instrumentation, and Automation.

[23]  Kwang-Hwa Liu,et al.  Quasi-Resonant Converters-Topologies and Characteristics , 1987, IEEE Transactions on Power Electronics.

[24]  Dong-Seok Hyun,et al.  Half-bridge series resonant inverter for induction heating applications with load-adaptive PFM control strategy , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[25]  J.M. Burdio,et al.  Power losses distribution in the litz-wire winding of an inductor for an induction cooking appliance , 2002, IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02.

[26]  Philip H. Peters.  A Portable Cool-Surface Induction Cooking Appliance , 1974 .