The design of the filter of firing synchronization for Tokamak rectifier

In order to meet the Tokamak high-power rectifiers on the control precision, sync-signals are required high accuracy. This paper Tokamak poloidal-field (PF) power supply for the research background, proposes high-precision synchronization--the rectifier transformer secondary AC voltage for the synchronous voltage signal. However, during the operation of rectifier, rectifier transformer secondary AC voltage is rich in harmonic, waveform distortion seriously. This paper proposes using high-order band-pass filter on the synchronous voltage signal filtering. The design of the band-pass filter is analyzed in detail, and the filter test. Filter is used to obtain good filtering results, achieving a precision synchronous. Tokamak rectifier power supply is conducive to safe operation.