发明名称 |
Power supply apparatus for arc-utilizing apparatus |
摘要 |
One of commercial AC voltages is coupled to power supply terminals from one of commercial AC power supplies. The AC power supplies belong to either a first group providing higher voltages or a second group providing lower voltages. A rectifier rectifies the AC voltage applied to the power supply terminals, and a rectified voltage is developed between two rectifier output terminals. A switching unit operates to connect voltage-boosting converters selectively in series and in parallel between the rectifier output terminals. Inverters are connected in the output sides of and in association with the respective voltage-boosting converters for converting DC voltages from the associated voltage-boosting converters to high-frequency voltages. The high-frequency voltages are voltage-transformed by associated voltage-transformers, and the voltage-transformed high-frequency voltages are converted into a DC voltage by a rectifier circuit and a reactor. The DC voltage is developed between output terminals of the apparatus. A switching control unit controls the switching unit so as to connect the voltage-boosting converters in series between the rectifier output terminals when a commercial AC power supply of the first group is connected to the power supply terminals, while connecting the voltage-boosting converters in parallel between the rectifier output terminals when a commercial AC power supply of the second group is connected to the power supply terminals.
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申请公布号 |
US2002056708(A1) |
申请公布日期 |
2002.05.16 |
申请号 |
US20010999023 |
申请日期 |
2001.11.15 |
申请人 |
MORIGUCHI HARUO;IKEDA TETSURO;ISHII HIDEO |
发明人 |
MORIGUCHI HARUO;IKEDA TETSURO;ISHII HIDEO |
分类号 |
B23K9/073;B23K9/10;H02M7/21;H02M9/00;(IPC1-7):B23K9/10 |
主分类号 |
B23K9/073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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