发明名称 |
POWER SUPPLY FOR ELECTRIC ARC GAS HEATER |
摘要 |
This invention concerns power supplies suitable for electric arc gas heaters such a plasma torches. It more particularly relates to the dimensioning of the inductor in the switched-mode DC to DC converter used for feeding the torch. The invention concerns in particular a DC power supply for driving a non-transferred electric arc gas heater, comprising: an AC to DC rectifier providing a potential U 0; a DC to DC switching converter having a switching frequency fs; a current control loop having a latency Formula (I); and, a ballast inductor having an inductance L; characterized in that inductance L is such that Formula (II) and Formula (III). Such a design ensures the stability of the current control loop, while also ensuring a sufficient amount of current ripple to spread out the erosion zone on the electrodes of the torch. |
申请公布号 |
WO2016050627(A1) |
申请公布日期 |
2016.04.07 |
申请号 |
WO2015EP72084 |
申请日期 |
2015.09.25 |
申请人 |
UMICORE |
发明人 |
OSTERMEYER, JOHN;HEULENS, JEROEN |
分类号 |
H05B7/18;B23K9/073;H05H1/36 |
主分类号 |
H05B7/18 |
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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