200MW MODULATOR의 출력안정화를 위한 DE-Q'ING SYSTEM에 관한 연구

Study on the De-Q'ing System for the Output Voltage Stabilization of a 200MW Modulator

  • 손윤규 (선형가속기 개발단, 포항 가속기연구소, 포항공과대학교) ;
  • 오종석 (선형가속기 개발단, 포항 가속기연구소, 포항공과대학교) ;
  • 조무현 (선형가속기 개발단, 포항 가속기연구소, 포항공과대학교) ;
  • 남궁원 (선형가속기 개발단, 포항 가속기연구소, 포항공과대학교)
  • Son, Y.K. (Linac Division, Pohang Accel elater Laboratory, Pohang University of Science and Technology) ;
  • Oh, J.S. (Linac Division, Pohang Accel elater Laboratory, Pohang University of Science and Technology) ;
  • Cho, M.H. (Linac Division, Pohang Accel elater Laboratory, Pohang University of Science and Technology) ;
  • Namkung, W. (Linac Division, Pohang Accel elater Laboratory, Pohang University of Science and Technology)
  • 발행 : 1994.07.21

초록

Modulators Installed in PLS(Pohang Light Source) Linac are composed of a DC high voltage section, a charging section and a discharging section. PFN is charged by a resonant charging mechanism, and discharged by a switching device through the primary of the pulse transformer connected to a load. Charged PFN voltage must be well regulated to obtain stable output pulse voltage at the load. For this purpose, DCHV is controlled by a SCR controller with feedback signal, and PFN voltage is regulated by a De-Q'ing circuit. The full power operation test shows the pulse voltage regulation within ${\pm}0.13%$ with SCR feedback control alone, and within ${\pm}0.08%$ together with De-Q'ing. This paper describes the design concept and operational characteristics of the De-Q'ing circuit.

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