Auxiliary power supply for solid state transformer with ultra high voltage capacitive driving

This paper proposes an auxiliary power supply (APS) for solid state transformers (SST), which is able to handle extremely high input voltage. Input series output parallel (ISOP) structure is used and only one controller IC is adopted to regulate the output voltage, which simplifies the structure and reduces the cost effectively. Capacitive driving is used to drive multiple switches in different modules of the APS. The proposed capacitive driving method is able to transfer gate signal and driving energy simultaneously even for thousands of volts, which largely reduces the cost and size of the APS. Finally the proposed auxiliary power supply is verified and demonstrated through a 12W prototype.

[1]  Hoi Lee,et al.  A 100V gate driver with sub-nanosecond-delay capacitive-coupled level shifting and dynamic timing control for ZVS-based synchronous power converters , 2013, Proceedings of the IEEE 2013 Custom Integrated Circuits Conference.

[2]  S. Bhattacharya,et al.  Auxiliary power supply for Solid State Transformers , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[3]  A Q Huang,et al.  The Future Renewable Electric Energy Delivery and Management (FREEDM) System: The Energy Internet , 2011, Proceedings of the IEEE.

[4]  Xiangning He,et al.  Common-Duty-Ratio Control of Input-Series Output-Parallel Connected Phase-shift Full-Bridge DC–DC Converter Modules , 2011, IEEE Transactions on Power Electronics.

[5]  Yifan Zhao,et al.  The Analysis and Improvement of Start-Up Circuits Used in the Switch Power-Supply , 2010, 2010 International Conference on Electrical and Control Engineering.

[6]  John Mookken,et al.  1000V wide input auxiliary power supply design with 1700V Silicon Carbide (SiC) MOSFET for three-phase applications , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[7]  R. Ayyanar,et al.  Common duty ratio control of input series connected modular DC-DC converters with active input voltage and load current sharing , 2003, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..

[8]  Alex Q. Huang,et al.  On Integration of Solid-State Transformer With Zonal DC Microgrid , 2012, IEEE Transactions on Smart Grid.

[9]  Gun-Woo Moon,et al.  Analysis and Design of a Three-Level LLC Series Resonant Converter for High- and Wide-Input-Voltage Applications , 2012, IEEE Transactions on Power Electronics.

[10]  Adrian Ioinovici,et al.  A family of zero-voltage and zero-current-switching (ZVZCS) three-level DC-DC converters with secondary-assisted regenerative passive snubber , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[11]  Xinbo Ruan,et al.  Zero-voltage-switching PWM three-level converter with current-doubler-rectifier , 2004 .

[12]  P.J. Grbovic.  Master/Slave Control of Input-Series- and Output-Parallel-Connected Converters: Concept for Low-Cost High-Voltage Auxiliary Power Supplies , 2009, IEEE Transactions on Power Electronics.

[13]  Xinbo Ruan,et al.  A Input-Series- and Output-Parallel-Connected Inverter System for High-Input-Voltage Applications , 2009, IEEE Transactions on Power Electronics.

[14]  O. C. Thomsen,et al.  A capacitive level shifter for high voltage (2.5kV) , 2012, 2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC).

[15]  Srdjan Lukic,et al.  Performance evaluation of solid state transformer based microgrid in FREEDM systems , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[16]  Bin Wu,et al.  Secondary-Side Phase-Shift-Controlled ZVS DC/DC Converter With Wide Voltage Gain for High Input Voltage Applications , 2013, IEEE Transactions on Power Electronics.