Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1996-12-03
1998-05-12
Berhane, Adolf
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
21913032, H02M 3335, H23K 9095
Patent
active
057515689
ABSTRACT:
A power supply apparatus for arc-utilizing equipment includes a first converter for converting a received AC voltage to a DC voltage.
An inverter converts the DC voltage to a high-frequency voltage, which is applied to a voltage-transformer with primary and second windings. A voltage-transformed high-frequency voltage induced in the secondary winding is converted to a DC voltage in a second converter, which is developed between two output terminals. The respective ones of the two output terminals are connected to a torch electrode of the arc-utilizing equipment and a workpiece. A bypass capacitor and a high-frequency voltage generator circuit are serially connected between the two output terminals. A control circuit controls the high-frequency voltage generator circuit and the inverter circuit. The bypass capacitor is connected directly between one of the two output terminals and the high-frequency voltage generator circuit.
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Danjo Kenzo
Hashimoto Takashi
Kinoshita Atsushi
Moriguchi Haruo
Okamoto Shigeru
Berhane Adolf
Sansha Electric Manufacturing Company Limited
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