Experimental analysis and optimization of key parameters of ZVS mode and its application in the proposed LLC converter designed for distributed power system application

Abstract This paper deals with experimental analysis of zero-voltage switching mode targeting high-frequency operation of chosen MOSFET type. After selection of specific type of transistor (IPW60R165CP) the experimental investigation has been made by changing parameters (e.g. dead-time, auxiliary capacitance of MOSFET, transistor current), that are influencing the ZVS commutation process. For these purposes we constructed the universal testing device, which is capable to secure realistic conditions of various types of commutation modes (hard switching, zero-voltage switching, zero-current switching). Afterwards the best settings of commutation mode have been utilized in proposed LLC converter suited for distributed power system application. Prototype is operating in ZVS region with optimized parameters. Switching frequency is from 130 kHz (input voltage 325 Vdc) to 210 kHz (input voltage 415 Vdc) with the output power of 1500 W. It is clear from the results that experimental analysis of the ZVS commutation mode brings expectation of transistor behavior which was totally confirmed also in the case of experimental analysis of LLC resonant converter.

[1]  Pavol Spanik,et al.  Measurement of swtitching losses in power transistor structure , 2008 .

[2]  Bo Yang,et al.  Topology investigation of front end DC/DC converter for distributed power system , 2003 .

[3]  Gun-Woo Moon,et al.  A simple and novel two phase interleaved LLC series resonant converter employing a phase of the resonant capacitor , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[4]  Hangseok Choi.  Analysis and Design of LLC Resonant Converter with Integrated Transformer , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[5]  Jinhaeng Jang,et al.  Dynamic analysis and control design of optocouplerisolated LLC series resonant converters with wide input and load variations , 2012 .

[6]  Jee-hoon Jung,et al.  Theoretical analysis and optimal design of LLC resonant converter , 2007, 2007 European Conference on Power Electronics and Applications.

[7]  F.C. Lee,et al.  Analysis and suppression of conducted EMI emissions for front-end LLC resonant DC/DC converters , 2008, 2008 IEEE Power Electronics Specialists Conference.

[8]  Fabien Meinguet,et al.  Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region , 2014, IEEE Transactions on Power Electronics.

[9]  Mohamed Elsaid Elgamal,et al.  Voltage profile enhancement by fuzzy controlled MLI UPFC , 2012 .

[10]  Moon-Young Kim,et al.  Analysis of LLC Resonant Converter considering effects of parasitic components , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[11]  S. Jeevananthan,et al.  A new series parallel switched multilevel dc-link inverter topology , 2012 .

[12]  P. Mattavelli,et al.  Analysis of multi-phase LLC resonant converters , 2009, 2009 Brazilian Power Electronics Conference.

[13]  M. Kazimierczuk,et al.  Resonant Power Converters , 1995 .

[14]  Seiya Abe,et al.  Design of LLC resonant converter using planar magnetic component , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[15]  Anup Kumar Panda,et al.  Research on cascade multilevel inverter with single DC source by using three-phase transformers , 2012 .

[16]  A. Midoun,et al.  Control of a DC/DC converter by fuzzy controller for a solar pumping system , 2011 .

[17]  Erkan Dursun,et al.  Comparative evaluation of different power management strategies of a stand-alone PV/Wind/PEMFC hybrid power system , 2012 .

[18]  Bo Yuan,et al.  A new structure of LLC with primary current driven synchronous rectifier , 2009, 2009 IEEE 6th International Power Electronics and Motion Control Conference.

[19]  Mohammad Monfared,et al.  Design and experimental verification of a dead beat power control strategy for low cost three phase PWM converters , 2012 .

[20]  Zhaoming Qian,et al.  Research of Digital Control Strategy for Multi-Resonant LLC Converter , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[21]  Jianping Ying,et al.  Analysis and Implementation of LLC Burst Mode for Light Load Efficiency Improvement , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[22]  Won-suk Choi,et al.  Analysis of MOSFET failure modes in LLC resonant converter , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[23]  E. C. Tatakis,et al.  A Weighted-Efficiency-Oriented Design Methodology of Flyback Inverter for AC Photovoltaic Modules , 2012, IEEE Transactions on Power Electronics.

[24]  Sakti Prasad Ghoshal,et al.  Development of a new algorithm for power flow analysis , 2011 .

[25]  R Beiranvand,et al.  Optimizing the Normalized Dead-Time and Maximum Switching Frequency of a Wide-Adjustable-Range LLC Resonant Converter , 2011, IEEE Transactions on Power Electronics.

[26]  Friedrich W. Fuchs,et al.  Analysis and comparison of planar- and Trench-IGBT-Modules under ZVS and ZCS switching conditions , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).