DocumentCode :
2866662
Title :
Nonlinear modelling of the PWM switch
Author :
Tymerski, Richard ; Vorpérian, Vatché ; Lee, Fred C. ; Baumann, William
Author_Institution :
Virginia Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fYear :
1988
fDate :
11-14 April 1988
Firstpage :
968
Abstract :
It is shown that nonlinearity due to the switching action in pulse width-modulated (PWM) DC-to-DC converters, DC-to-AC inverters or amplifiers, and input-current-shaping DC-to-DC converters can often conveniently be confined to a three-terminal structure referred to as the PWM switch. the PWM switch represents a static nonlinearity for which circuit models can easily be derived for frequencies harmonically related to the frequency of perturbation. Converter analysis can now be approached in an analogous way to ordinary transistor circuit analysis whereby the nonlinear three-terminal device is replaced by its circuit model. A first-order approximation of the model results in the small-signal model.<>
Keywords :
invertors; power convertors; pulse width modulation; switching circuits; DC-AC invertors; DC-DC convertors; PWM switch; amplifiers; circuit model; nonlinear modelling; power convertors; pulse width modulation; small-signal model; static nonlinearity; three-terminal structure; DC-DC power converters; Frequency conversion; Pulse amplifiers; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switches; Switching circuits; Switching converters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
Type :
conf
DOI :
10.1109/PESC.1988.18232
Filename :
18232
Link To Document :
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