Title :
Application of the time-varying transfer function for exact small-signal analysis
Author :
Tymerski, Richard
Author_Institution :
Dept. of Electr. Eng., Portland State Univ., OR, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
An analysis method for determining the control-to-output linearized describing function of time-interval-modulated switched networks using time-varying system theory was previously proposed by the author. A simplification is now presented which eases the analysis considerably. Use of the simplified approach is demonstrated in the derivation of the control-to-output frequency response of pulse-width-modulated (PWM) DC-to-DC switching power converters operating in discontinuous conduction mode (DCM) and current programmed converters operating in continuous conduction mode (CCM) as well as in DCM. Experimental results are presented which verify the modeling approach
Keywords :
power convertors; pulse width modulation; switching circuits; transfer functions; PWM DC-to-DC switching power converters; continuous conduction mode; control-to-output frequency response; control-to-output linearized describing function; current programmed converters; discontinuous conduction mode; exact small-signal analysis; time-interval-modulated switched networks; time-varying transfer function; Control systems; Feedback; Frequency response; Genetic expression; Power system modeling; Pulse width modulation; Pulse width modulation converters; Switching converters; Time varying systems; Transfer functions;
Journal_Title :
Power Electronics, IEEE Transactions on