High-voltage/large-current generator apparatus and method for generating high-voltage/large-current

Claim 1

A high-voltage/large-current generator apparatus compris1ng: power source means for providing electric power; converter means, having self-extinctive switching elements and coupled to said power source means, for converting said electric power into an excitation current by the switching operation of said self-extinctive switching elements; output means, coupled to said converter means, for storing magnetic energy corresponding to said excitation current; a bypass circuit coupled to said output means; and control means coupled to said converter means and being responsive to said excitation current, for circulating said excitation current in a bypass pair mode between said converter means and said output means when the magnitude of said excitation current reaches a predetermined reference value, and for commutating the circulated excitation current from said converter means to said bypass circuit after a given period of time elapses from where the magnitude of said excitation current reaches said predetermined reference valve, thereby generating from said output means a high voltage or a large current corresponding to the magnitude of the stored magnetic energy; wherein said power source means includes an AC power source for providing AC electric power, and an AC circuit breaker for stopping the feeding of said AC electric power from said AC power source to said converter means, the feeding of said AC electric power being stopped by said AC circuit breaker when the magnitude of said excitation current reaches said predetermined reference value and wherein said converter means converts said AC electric power into a DC current used for said excitation current.

Claim 10

A method for generating high-voltage or large-current, which is applied to an apparatus comprising power source means for supplying electric power; converter means, having self-extinctive switching elements, for converting said electric power to an excitation current coil means for storing magnetic energy corresponding to said excitation current; and a bypass circuit coupled to said coil means, said method comprising the steps of: (a) circulatng said excitation current in a bypass pair mode between said converter means and said coil means when the magnitude of said excitation current reaches a reference value, (b) stopping the supply of said electric power to said converter means when the magnitude of said excitation current reaches said reference value, and (c) commutating the circulated excitation current from said converter means to said bypass circuit after a given period of time elapses from when the magnitude of said excitation current reaches said reference value, so that said coil means generates a high voltage or a large current corresponding to the magnitude of the magnetic energy stored in said coil means.

Claim 11

A method for generating high-voltage or large-current, which is applied to an apparatus comprising power source means for supplying electric power; converter means, having self-extinctive switching elements, for converting said electric power to an excitation current coil means for storing magnetic energy corresponding to said excitation current; and a bypass circuit coupled to said coil means, said method comprising the steps of: (a) circulatng said excitation current in a bypass pair mode between said converter means and said coil means when the magnitude of said excitation current reaches a reference value, (b) stopping the supply of said electric power to said converter means when the magnitude of said excitation current reaches said reference value, and (c) commutating the circulated excitation current from said converter means to said bypass circuit after a given period of time elapses from when the magnitude of said excitation current reaches said reference value, so that said coil means generates a high voltage or a large current corresponding to the magnitude of the magnetic energy stored in said coil means.