Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1998-10-20
2000-02-08
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 24, 363 98, 363134, H02M 3335, H02M 324, H02M 7538
Patent
active
060234164
ABSTRACT:
An input-side rectifier of a DC power supply apparatus receives and rectifies an AC voltage selected from first and second groups of AC voltages. The AC voltages in the second group are lower than those of the first group. A voltage boosting/lowering converter boosts or lowers the output voltage of the input-side rectifier to a voltage having a predetermined value. An inverter converts the output voltage of the voltage boosting/lowering converter to a high-frequency voltage. A voltage transformer transforms the high-frequency voltage from the inverter. An output-side rectifier rectifies the transformed high-frequency voltage from the transformer.
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Moriguchi et al.; copending patent application 08/968,054 filed Nov. 12, 1997 entitled Power Supply Apparatus for Plasma Arc Utilizing Equipment.
Moriguchi et al.; copending patent application 09/152,017 filed Sep. 11, 1998 entitled "Inverter and DC Power Supply Apparatus with Inverter Used Therein".
Moriguchi et al.; copending patent application 09/159,485 filed Sep. 23, 1998 entitled "DC Power Supply Apparatus".
Arai Toru
Fujiyoshi Toshikazu
Omura Takeshi
Shikata Kunio
Murray William H.
Sansha Electric Manufacturing Company Limited
Vu Bao Q.
Wong Peter S.
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