Improved Model of New Six-Phase High Voltage Power Supply for Industrial Microwave Generators with A Single Magnetron By Phase

This original work treats the feasibility study of new type of high voltage power supply with a character six-phase for a magnetron 800 Watts-2450 MHz per phase for industrial microwave generators. The design of this new power supply uses a new sex identical single-phase high voltage transformer with magnetic leakage flux, coupled in star. Each single phase supply a cells which multiples the voltage, stabilizes the current and supplies in its turn a single magnetron. The π equivalent model of the transformer is developed, taking into account the saturation phenomenon and the stabilization process of each magnetron current. This model is based on the determination of the analytical expressions of its non-linear inductances, that can be determined from the establishment of the B(H) magnetization curve of the used material (SF19). This new power supply presents a multiple benefits in terms of reducing of weight, volume, electrical wiring and cost during of the implementation and maintenance of such a new device. The simulation results, upbraided by Matlab-SIMULINK code, are in good agreement with those found by experimental measurement for one magnetron, while respecting the conditions recommended by the manufacturer of magnetron: Ipeak<1.2 A, Imean≈ 300 mA.