Abstract

The ine uences of the alternating component of the power supply on the arc blow force and the heat transfer to the anode are studied experimentally and theoretically. The alternating component has a great ine uence on the time-averaged total pressure of the plasma e ow in the dc arc, thus ine uencing the arc blow force. The opencircuit voltage of the three-phase all-wave silicon rectie er power supply has an ine uence on the magnitude of the alternating component and, therefore, ine uences the heat transfer to the transferred anode. At present, the three-phase all-wave silicon rectie erpower supply is the necessary facility in the study of large power plasma arcs, which have been widely used in aeronautics, astronautics, and industrial e elds, and so the conclusions obtained are helpful for scientie c research and industrial practice.

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