INSTITUTO DE INVESTIGACIONES EN ELECTRONICA, CONTROL Y PROCESAMIENTO DE SEÑALES
Unidad Ejecutora - UE
Modelling and dynamical analysis of a DC?DC converter with coupled inductors
MARÍA BELÉN D´AMICO; S. A. GONZÁLEZ
ELECTRICAL ENGINEERING (BERLIN. PRINT)
Lugar: Berlin; Año: 2019 vol. 101 p. 67 - 80
The large-signal averaged model of a coupled-inductor double-boost converter is developed and analysed in this paper. Dueto the large current fluctuations, the differential system is deduced by averaging the circuit equations of the operation modesover a switching period. Generic expressions that permit to calculate the current commutation intervals as function of theaveraged state variables are also found to complete the model. Resistive losses are introduced into an equivalent averagedcircuit leading to a more realistic scenario. The proposed state-space model is used for studying voltage conversion ratios,transients and frequency-domain responses of the converter as well as for designing a control loop that regulates the outputvoltage. Numerical simulations and experimental measurements corroborate the obtained results.