Control of a modular series parallel resonant converter system for a solid state 2.88MW/115-kV long pulse modulator

In this paper, a control strategy of a modular serial parallel resonant converter (SPRC) modulator system is presented and verified by simulations. The system is based on two SPRC modules forming an input series output parallel (ISOP) stack. To obtain the given output voltage of 115kV, 8 of these ISOP stacks are connected in parallel at the input and in series at the output, forming an input parallel output series (IPOS) system. For designing the control of this system, a large signal model is derived and the influence of component tolerances is investigated. The performance of the controller is shown with simulation results. The simulation model of a single module is validated by measurement results.

[1]  Stefanos N. Manias,et al.  Modular DC-DC convertor for high-output voltage applications , 1993 .

[2]  Xinbo Ruan,et al.  Control Strategy for Input-Series–Output-Parallel Converters , 2009, IEEE Transactions on Industrial Electronics.

[3]  Fernando Nuño García,et al.  Dynamic and Steady-State Models for the PRC-LCC Resonant Topology With a Capacitor as Output Filter , 2007, IEEE Transactions on Industrial Electronics.

[4]  Xinbo Ruan,et al.  The input voltage sharing control strategy for input-series and output-parallel converter under extreme conditions , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[5]  Xinbo Ruan,et al.  Modularization structure for series-parallel connected converters , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[6]  Jung-Won Kim,et al.  Modeling, control, and design of input-series-output-parallel-connected converter for high-speed-train power system , 2001, IEEE Trans. Ind. Electron..

[7]  R. Ayyanar,et al.  Active input-voltage and load-current sharing in input-series and output-parallel connected modular DC-DC converters using dynamic input-voltage reference scheme , 2004, IEEE Transactions on Power Electronics.

[8]  R. Ayyanar,et al.  Common-duty-ratio control of input-series connected modular DC-DC converters with active input voltage and load-current sharing , 2006, IEEE Transactions on Industry Applications.

[9]  G. Ivensky,et al.  An RC load model of parallel and series-parallel resonant DC-DC converters with capacitive output filter , 1999 .

[10]  H. Pfeffer,et al.  A Long Pulse Modulator For Reduced Size And Cost , 1994, Twenty-First International Power Modulator Symposium, Conference.

[11]  Michael Jaritz,et al.  Optimal Design of a Modular Series Parallel Resonant Converter for a Solid State 2.88 MW/115-kV Long Pulse Modulator , 2014, IEEE Transactions on Plasma Science.

[12]  J.W. Kolar,et al.  Small-Signal Model of a 5kW High-Output Voltage Capacitive-Loaded Series-Parallel Resonant DC-DC Converter , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[13]  Jonas Sjolte Bakken.  Study and development of Solid State based Long Pulse Klystron Modulators for future Linear Accelerators at CERN , 2007 .

[14]  Xinbo Ruan,et al.  DC/DC Conversion Systems Consisting of Multiple Converter Modules: Stability, Control, and Experimental Verifications , 2009, IEEE Transactions on Power Electronics.

[15]  A.M. Pernia,et al.  A Circuit for the Large and Small Signal Dynamic Modeling of the PRC-LCC Resonant Topology with a Capacitor as Output Filter , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[16]  K. Siri,et al.  Uniform Voltage Distribution Control for Paralleled-Input, Series-Output Connected Converters , 2005, 2005 IEEE Aerospace Conference.

[17]  G. Ivensky,et al.  A novel RC model of capacitive-loaded parallel and series-parallel resonant DC-DC converters , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.