New analytical approach for computing DC unipolar corona losses

Abstract
New analytical expressions for ionised electric field, emitter charge and current densities and voltage-current characteristics for DC unipolar corona are presented for conductor-to-plane geometry. The hypotheses normally considered in the literature, including that of Deutsch, are used in the integration procedure which is based on a Fourier series expansion of charge and current densities on the emitter wire. Different unipolar configurations are considered for the computation of the emitter charge density distribution and of corona losses. The results obtained, compared with those in the References, show the accuracy of the analytical approach.

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