Harmonic analysis of oscillograms of electric current through stem wall of forage grasses

Abstract

The study of ways to improve energy efficiency of electroosmotic dehydration and electroplasmolysis of forage grasses requires substantiation of ways to increase the technological component of the total current while reducing the thermal component. The determination of these ways is possible on the basis of synthesis and analysis of the equivalent electrical substitution scheme of the stem wall. One of the stages of current and moisture transfer through the stem wall is the stage of ion transfer through the interface “stem wall surface - aqueous electrolyte solution”, for mathematical description of which it is required to estimate the harmonic composition of the total transfer current through the interface. The goal is to estimate the harmonic composition of the current through the stem wall of forage grasses. The methods of electrical and electro-chemical measurements, theoretical foundations of electrical engineering technology, and harmonic analysis of periodic non-sinusoidal oscillations are used. The scheme of experimental setup, methods of sampling and measurements, and statistical processing of measurement results are discussed. As a result of decomposition of the experimental oscillogram into Fourier series it is found that the current through the stem wall of a forage grass may be considered as the sum of the constant component, first and second harmonic components with the corresponding initial phase shift angles. The obtained result allows obtaining a mathematical model of the stage of ion transfer through the interface “surface of the stem wall - aqueous electrolyte solution” and reasonably taking into account this stage of transfer in the electrical equivalent substitution scheme of the stem wall. In this case, the electrical equivalent scheme of substitution of the stem wall will allow estimating ways to improve energy efficiency of electroosmotic dehydration and electroplasmolysis of forage grasses by increasing the technological component of the total current while reducing its irrational thermal impact.