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Power Electronics CAD: from space applications to industrial applications

Congresso del Dipartimento di Fisica Highlights in Physics 2005. Power Electronics CAD: from space applications to industrial applications. P.G. Maranesi, M. Riva Electronic Section – Department of Physics University of Milan Via Celoria 16, 20133 Milano Italy. Summary.

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Power Electronics CAD: from space applications to industrial applications

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  1. Congresso del Dipartimento di Fisica Highlights in Physics 2005 Power Electronics CAD: from space applications to industrial applications P.G. Maranesi, M. Riva Electronic Section – Department of Physics University of Milan Via Celoria 16, 20133 Milano Italy

  2. Summary • Space applications often dragged power electronics in other fields • Still the aerospace stimulates innovation • The case of FREDOMSIM for Computer Aided Analysis and Design of SPS for satellites is dealt with here: _ The Global Star example _ Dynamic Models of ISS DC/DC Converters • Technical fall-out Power Electronics CAD: space and industrial applications

  3. Dynamic Characterization and Control Optimization of the PWM DC-DC Converters • Characterization of the Power Cell in the Frequency Domain • Assignment of Inner Feedback and Feed Forward compensations • Assignment of the External Feedback Network • Closed Loop Characterization • Connection with Other Circuit Blocks and System Characterization Power Electronics CAD: space and industrial applications

  4. Dynamic Description in the State Space Discrete Time Z-transform Power Electronics CAD: space and industrial applications

  5. Discrete time model automatic build up AVERAGING A, B, C, D Matrices Computation Power Electronics CAD: space and industrial applications

  6. Dynamic Characterization and Control Optimization of the PWM DC-DC Converters • Characterization of the Power Cell in the Frequency Domain • Assignment of Inner Feedback and Feed Forward compensations • Assignment of the External Feedback Network • Closed Loop Characterization • Connection with Other Circuit Blocks and System Characterization Power Electronics CAD: space and industrial applications

  7. Inner feedback and feed-forward compensations F inner feedback matrix G feed-forward matrix Power Electronics CAD: space and industrial applications

  8. Dynamic Characterization and Control Optimization of the PWM DC-DC Converters • Characterization of the Power Cell in the Frequency Domain • Assignment of Inner Feedback and Feed Forward compensations • Assignment of the External Feedback Network • Closed Loop Characterization • Connection with Other Circuit Blocks and System Characterization Power Electronics CAD: space and industrial applications

  9. Power Distribution on the ISS Power Electronics CAD: space and industrial applications

  10. Full Bridge Push-Pull PS During the short delay between the ON-OFF and OFF-ON commutations, resonant transitions occur involving inductor L and MOSFET parasitic capacitors. switch commands and the inductor current waveform Power Electronics CAD: space and industrial applications

  11. Full Bridge Phase Shifted Power Electronics CAD: space and industrial applications

  12. This tool has been used profitably elsewhere • Hybrid switching power supplies design • Large bandwidth HV generators for high resolution CRTs • Impedance characterization of inverter fed induction motors • Dynamic stability forecasts of power distribution systems Power Electronics CAD: space and industrial applications

  13. Card cage #3 48V Card cage #2 Card cage #1 AC Front End Card #2 Card #3 Isolated Bus Converter Isolated Bus Converter Isolated Bus Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter niPOL Converter POL POL POL POL POL POL POL POL POL A fall out example:The distributed power supply system Intermediate Bus Architecture (IBA) 48V Card #1 12V “Intermediate Bus Converter (IBC)” Or “Bus Converter (BC)” Power Electronics CAD: space and industrial applications

  14. The converter for the distributed power supply systems: Switch in Line Converter (SILC) • Suddivisione della tensione in ingresso • Minori perdite di conduzione • Minor rapporto spire • Possibile di utilizzo di trasformatori planari Power Electronics CAD: space and industrial applications

  15. Conclusions • The development of FDS was stimulated by space application exigencies • It provides a fast and accurate description of the the dynamics and it helps the design optimization • It opens up the possibility of worst case analyses of the dynamic performances • It can be profitably employed also in industrial applications Power Electronics CAD: space and industrial applications

  16. Congresso del Dipartimento di Fisica Highlights in Physics 2005 Power Electronics CAD: from space applications to industrial applications P.G. Maranesi, M. Riva Electronic Section – Department of Physics University of Milan Via Celoria 16, 20133 Milano Italy

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