New transfer function model for PWM power converter

Author

Yao, Guijun ; Norum, Lars

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Norwegian Inst. of Technol., Norway

fYear

1990

Firstpage

1135

Abstract

An equivalent circuit for a power converter bridge leg is derived. In this circuit model the PWM (pulsewidth modulation) power switches are represented by dependent power sources. By this approach PWM switching converters can be represented by a continuous, but nonlinear, electric circuit. By making reasonable assumptions, a linear transfer function model for the power converter is developed. The root locus method is used to analyze the dynamic performance of the inverter. The accuracy of the transfer function model is examined. A single-phase bridge inverter is used as an example

Keywords

equivalent circuits; invertors; power convertors; pulse width modulation; switching; transfer functions; PWM power converter; bridge leg; dynamic performance; equivalent circuit; inverter; root locus method; single-phase; switching; transfer function model; Bridge circuits; Equivalent circuits; Leg; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Space vector pulse width modulation; Switching converters; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE

Conference_Location

Pacific Grove, CA

Print_ISBN

0-87942-600-4

Type

conf

DOI

10.1109/IECON.1990.149297

Filename

149297