Title :
High accuracy magnet power supply for proton synchrotron by repetitive control
Author :
Sato, H. ; Sueno, T. ; Toyama, T. ; Mikawa, M. ; Toda, T. ; Matsumoto, S.
Author_Institution :
Nat. Lab. for High Energy Phys., Ibaraki, Japan
Abstract :
A high-accuracy magnet power supply for 12 GeV proton synchrotron using repetitive control is described. The magnet power system consists of a ring magnet power supply (23.6 MVA), reactive power compensator systems (20 MVAr lag for fundamental) and harmonic filter banks (20 MVAr lead). The bending magnets power supply consists of eight twelve-pulse rectifiers and is controlled by six groups of voltage patterns to optimize the reactive power and voltage ripple. The hybrid control system with the analog automatic current regulator and automatic voltage regulator loop as real-time negative feedback control and the repetitive current and voltage control was performed. The current precision of 10 -4 compared to the flat top current was obtained
Keywords :
beam handling equipment; compensation; electric current control; electromagnets; feedback; filters; harmonics; power supplies to apparatus; proton accelerators; reactive power; rectifiers; synchrotrons; voltage control; voltage regulators; 20 MVAr; 23.6 MVA; analog automatic current regulator; automatic voltage regulator loop; bending magnets power supply; harmonic filter banks; magnet power supply; proton synchrotron; reactive power compensator; reactive power optimisation; real-time negative feedback control; repetitive control; ring magnet power supply; twelve-pulse rectifiers; voltage patterns; voltage ripple optimisation; Automatic voltage control; Control systems; Magnetic separation; Power harmonic filters; Power supplies; Power system harmonics; Protons; Regulators; Synchrotrons; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-0090-4
DOI :
10.1109/PESC.1991.162768
