IMPLEMENTATION AND OPTIMIZATION UNDER MATLAB CODE OF A HV POWER TRANSFORMER FOR MICROWAVE GENERATORS SUPPLYING TWO MAGNETRONS

The design of this new power supply uses a HV single phase leakage flux transformer supplying two cells, composed each one of a capacitor and a diode, which multiplies the voltage and stabilizes the current. Each cell supplies in turn a single magnetron. This paper treats firstly, a new modeling of this transformer with shunts of HV power for N=2 magnetrons. This model is based on the determination of analytical expressions of nonlinear storable inductances, from the fitting of the magnetization curve B(H) of the material used. The resulting model will be implemented for the first time under MATLAB-SIMULINK® tool where we compare the results from this model to those obtained from the old model validated by EMTP. In a second step, using the programming tool MATLAB, we discussed an optimization strategy of this new HV power supply for the microwave generators with N=2 magnetrons, to envisage the possibility of obtaining gains in section, space, and weight, and to reduce the transformer cost, and therefore that of all the installation, while respecting the conditions recommended by the constructor: Ipeak < 1.2 A, Imean ≈ 300 mA.

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