Abstract
The use of plasma for dispersed material treatment imposes the following requirements on the plasma source: a long-duration service life, a simple construction, a provision of a stable arcing in a flow, a generation of a sufficiently large plasma volume. This chapter investigates the high-voltage low-current arc between rod electrodes exposed to an air flow. The plasma generation device is supplied by the alternating three-phase electric current. The arc stability under intensive stream conditions is provided by a high voltage of a power supply. The plasma generator operates as follows. When a high voltage is applied to the electrodes, the break-down of the electrode gap occurs in its narrow place. The efficiency of plasma action on air-dispersed flows is determined first of all by a value of active power of the discharge. Arc voltage depends on an arc current and a flow velocity.
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