Author: King, Q.
Paper Title Page
WEPMN008 Function Generation and Regulation Libraries and their Application to the Control of the New Main Power Converter (POPS) at the CERN CPS 886
  • Q. King, S.T. Page, H. Thiesen
    CERN, Geneva, Switzerland
  • M. Veenstra
    EBG MedAustron, Wr. Neustadt, Austria
  Power converter control for the LHC is based on an embedded control computer called a Function Generator/Controller (FGC). Every converter includes an FGC with responsibility for the generation of the reference current as a function of time and the regulation of the circuit current, as well as control of the converter state. With many new converter controls software classes in development it was decided to generalise several key components of the FGC software in the form of C libraries: function generation in libfg, regulation, limits and simulation in libreg and DCCT, ADC and DAC calibration in libcal. These libraries were first used in the software class dedicated to controlling the new 60MW main power converter (POPS) at the CERN CPS where regulation of both magnetic field and circuit current is supported. This paper reports on the functionality provided by each library and in particular libfg and libreg. The libraries are already being used by software classes in development for the next generation FGC for Linac4 converters, as well as the CERN SPS converter controls (MUGEF) and MedAustron converter regulation board (CRB).  
poster icon Poster WEPMN008 [3.304 MB]  
WEPMN026 Evolution of the CERN Power Converter Function Generator/Controller for Operation in Fast Cycling Accelerators 939
  • D.O. Calcoen, Q. King, P.F. Semanaz
    CERN, Geneva, Switzerland
  Power converters in the LHC are controlled by the second generation of an embedded computer known as a Function Generator/Controller (FGC2). Following the success of this control system, new power converter installations at CERN will be based around an evolution of the design - a third generation called FGC3. The FGC3 will initially be used in the PS Booster and Linac4. This paper compares the hardware of the two generations of FGC and details the decisions made during the design of the FGC3.  
poster icon Poster WEPMN026 [0.586 MB]