Title :
Correcting the Pspice large-signal model for PWM converters operating in DCM
Author :
Zhu, Guangyong ; Batarseh, Issa
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA
fDate :
4/1/2000 12:00:00 AM
Abstract :
It is shown that an incorrect parameter limit in the existing Pspice pulsewidth modulated (PWM) switch model has been detected. The main objective of this work is to alert users of such models to a potential source of simulation error under certain parameter specifications as shown here. Simulation of the boost converter operating in discontinuous conduction mode (DCM) based on the incorrect model results in either convergence problems or wrong results. Correction of the model is provided and its validity is verified using a specific converter example. The results illustrate how the old and corrected models produce different results when the boost converter is subjected to some transients under sudden load variations
Keywords :
DC-DC power convertors; PWM power convertors; SPICE; convergence of numerical methods; equivalent circuits; error correction; power engineering computing; transient response; PWM converters; Pspice large-signal model; boost converter; convergence problems; discontinuous conduction mode; equivalent circuit model; incorrect parameter limit; simulation error; sudden load variations; switch model; transients; Circuits; Convergence; DC-DC power converters; Power system modeling; Pulse width modulation; Pulse width modulation converters; SPICE; Switches; Switching converters; Voltage control;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
