Resonant reactive power amplifier. Analysis of electromagnetic processes

Abstract

Purpose. Analysis of electromagnetic processes and the theoretical substantiation of the fundamental possibility of the reactive power resonant amplification of harmonic signals in a circuit of two real inductively coupled sequential active-reactive circuits, where the “input” element is the secondary circuit Methodology. The study of this topic was carried out most extensively and fully, namely: studied all possible sources of theoretical substantiation of this work; all factors considered in sources are compared; practical facts of the resonance phenomenon are estimated by the example of an experimental model. Findings. The implementation scheme of the converter is proposed, where there is not only the voltage transformation, but the power of harmonic currents and voltages. It was found that with an appropriate choice of parameters, the proposed resonant converter circuit can be considered as a reactive electric power amplifier with the highest possible gain— Kmax = 0,5 × ((ω L2) / R2), ω is the resonant frequency, L2 is the “output” inductance, R2 is the active resistance. Physically, the maximum power gain by a resonant transducer is due to the minimum possible transfer of energy from the secondary circuit to the primary one with an input harmonic voltage source. The quantitative estimates made for the experimental model confirmed the results of the qualitative analysis and showed that the proposed resonant amplifier circuit can provide high indicators of its effectiveness (for example, an increase in electrical power of ~ 38 times!). Originality. The scientific novelty of this work consists in substantiating the principle efficiency of a resonant amplifier of reactive electrical power, based on the findings of a generalized theoretical analysis of electromagnetic processes and numerical estimates for one of its experimental implementation options. Practical value. The theoretical studies carried out on the proposed scheme of a resonant electric power amplifier are of practical interest for further experimental studies, as well as, for example, for formulating recommendations in the development of circuit elements of power sources for magnetic-pulsed attraction of specified surface areas of thin-walled sheet metals. The search for the conditions for the most effective efficiency, the experimental study of electromagnetic processes in the proposed scheme of a resonant reactive power amplifier and the development of proposals for the conversion of reactive into active electrical power seem very promising in the direction of the research.

Keywords

• resonance
• inductance
• Tesla transformer
• electric power
• transformation coefficient