Mathematical Modeling of Inverter with a Hybrid Resonant Circuit Operation Modes

Push-pull converters are successfully used in secondary power supplies, battery chargers and pulse generators. The authors developed an autonomous inverter with an inductive-capacitive converter (ICC) based on the hybrid electromagnetic element (EME). The use of hybrid EMEs can improve the technical and economic parameters, increase reliability and reduce the cost and dimensions of devices based on them. In this article, the authors solved the problem of studying the operation modes of hybrid EME in the ICC in push-pull circuits of an autonomous inverter when a storage capacitor (SC) is charged. The high-energy efficiency of the charge process is ensured by the SC charge with a current of unchanged shape. The authors developed a mathematical model of system charge of SC with an ICC included in the diagonal of an inverter to study the cyclic recharge of the hybrid EME electrodes. The peculiarity of the developed mathematical model is to describe the electromagnetic processes in hybrid EME with the system of linear equations using integral parameters. The energetically effective charge mode of the SC provides an increase of the voltage amplitude on the electrodes of the hybrid EME and a decrease of the current amplitude at the same output power of the SC charge system. Power losses are reduced, and this leads to the increase in efficiency by 15 percent. The research results show that the most energetically efficient mode of SC charge is achieved with the most favorable mode of operation of the hybrid EME. It is a resonance regime.