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Design, analysis and control of synchrotron power supplies

  • Autores: Udaya Bhasker Manthati
  • Directores de la Tesis: Oriol Gomis Bellmunt (dir. tes.), Antoni Sudriá Andreu (codir. tes.)
  • Lectura: En la Universitat Politècnica de Catalunya (UPC) ( España ) en 2011
  • Idioma: inglés
  • Tribunal Calificador de la Tesis: Lourdes Ventolá Mallart (presid.), Samuel Galceran Arellano (secret.), Roberto Arturo Petrocelli (voc.)
  • Materias:
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  • Resumen
    • The design and development of fast pulsed excitation direct current power supplies in the line of high inductive and low resistive magnetic load components for Synchrotron Booster Dipole Magnet is a complex strategy to meet the required specifications. Generally Booster Dipole Magnets are powered by a single large power supply. This thin and high intensity Synchrotron radiation beam can be processed different stages in synchrotron machines, in the process of beam transmission the coordination and monitoring of power supplies is a vital aspect to maintain the Synchrotron radiation in a storage ring for several hours. The optimized use of Synchrotron radiation for different beam lines is a challenge task.

      The synchrotron machine power supplies are cyclic in nature in which the load consumption is not in phase with source and to reduce the variations in the grid these aspects draws an attention to store an energy and a proposal of Two stage converter. In the present Thesis development magnet power supplies for medium cyclic systems is done with the introduction of Super capacitors and Digital control techniques. The relative study on various energy storage devices such as Batteries, Fly wheel, Superconducting Magnet Energy Storage (SMES) systems and Super capacitors are presented with special emphasis on super capacitors made. A literature review on Power Electronics Building Block concept and the parallel operation of low power converter modules are done.

      At first phase a brief literature survey on Synchrotron Light Sources and its beam line applications are given in which fundamentals on Spainish Light Source are provided in detail. An advancement in particle accelerator studies with changes and development in various generations of Synchrotron Light Sources are made. A State of the Art of Accelerator Power Electronics technologies and its structures are presented. In second phase a proposal and development of Two stage power converter structure and its simulation work are done both in continuous and discrete time model. A Praportional and Integral (PI) controller is implemented to verify the system. In which a cascade PI controller for stage B and a single stage PI current controller with Split-Range technique for Stage C are proposed. The constants are derived based on analytical methods and a few of them by manual method. The core part of the Thesis deals with Design, Analysis and Control of proposed Two stage Power converter and the Digital Signal Controller of type TMS320F2808 for verifying the control algorithms. A soft ware code for an hardware interface is generated by using code composer studio of version 3.3. The development of work made with 20 kHz operation with Pulse Width Modulation techniques. A part of reduced scale platform is developed to see the performance of the system and to verify the cotnrol algorithms. A Current Control loop and Voltage Control loop tests for Stage B converter are made with Super capacitors.

      At the end the developed simulation and experimental results are discussed in conclusion a favorable choice to use Super capacitors in Synchrotron Power Supplies applications for instantaneous charging and discharging magnetic loads.


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