Snubber circuit

Abstract

Abstract PURPOSE:To obtain a snubber circuit of a gate turn-off thyristor (GTO) which can regenerate the capacitor power of a snubber to a 100% power supply with high efficiency, by providing a reactor in series to a power converter for regeneration of electric power. CONSTITUTION:When a switch 21 is turned on, a main power supply 10 which is applied to a GTO31 via a resistance 15 receives a limitation for the increasing factor by a diode 23 and a capacitor 14. thus an error ignition is avoided for the GTO31. When the GTO31 is ignited and turned on, the electric charge stored in the capacitor 14 is discharged via a series circuit of a reactor 51 and a power converter 32 for regeneration of electric power and the GTO31. This discharged current charges an auxiliary power supply 34 via the converter 32 and a diode 33. As a result, the electric power stored at the capacitor 14 is regenerated about 100% to a power supply 34.

Inventors

• 👤 Tatsuaki Anpo
• 👤 達明 安保

Bibliographic Details