Title :
Improved π model of the leakage flux transformer used for magnetrons
Author :
Ahmedou, M. Ould ; Ferfra, M. ; Nouri, R. ; Chraygane, M.
Author_Institution :
Electr. Eng., Power Electron. Lab., Mohamed V Univ., Rabat, Morocco
Abstract :
The high voltage power supply for magnetron, used for the microwaves generators in industrial applications is a classical design. This system is composed of a single phase leakage flux transformer supplying a cell composed of a capacitor and a diode, which double the voltage and stabilize the current. An improved π quadruple model of this transformer is developed taking into account the saturation phenomena. It is based on a determination of analytic inductances deduced by a new analytic approach of fitting the nonlinear curve B-H. Two parts of this curve are considered for this analytic representation: The linear region is fitted by a non integer power series whereas the saturation region by a polynomial representation. We present a validation of this new model, by MATLAB-SIMULINK® code at the nominal state, based on the comparison between experimental and simulated currents and voltages. The simulation curves match nearly the experimental measurements. The results from MATLAB-SIMULINK® of this new model are also compared to the ones from old π model based on introducing a set of points of magnetizing curve using EMTP® code (Electromagnetic Transient Program).
Keywords :
capacitors; diodes; electric generators; magnetrons; polynomials; transformers; EMTP code; Matlab-Simulink code model; capacitor; current stability; diode; electromagnetic transient program code; high voltage power supply; improved π quadruple model; magnetizing curve; magnetron; microwaves generators industrial application; noninteger power series; nonlinear curve B-H; polynomial representation; single phase leakage flux transformer; Circuit faults; Computer languages; EMTP; Inductance; Magnetrons; Mathematical model; Saturation magnetization; EMTP®; MATLAB-SIMULINK®; high voltage (HV); magnetron; microwaves generators; modeling; power supply; transformer;
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2011 International Conference on
Conference_Location :
Ouarzazate
Print_ISBN :
978-1-61284-730-6
DOI :
10.1109/ICMCS.2011.5945710