Title :
Switching frequency dependent averaged models for PWM DC-DC converters
Author :
Lehman, Brad ; Bass, Richard M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA
Abstract :
This paper introduces a new averaging method for PWM DC-DC converters which yields averaged models that are switching frequency dependent. The new models are obtained by using periodic ripple functions to improve the averaging approximation. Two important benefits are the correction of DC offset error in steady-state, and the modeling of switching frequency effects on closed loop performance and stability
Keywords :
DC-DC power convertors; PWM power convertors; closed loop systems; stability; switching circuits; DC offset error correction; PWM DC-DC converters; averaging approximation; closed loop performance; periodic ripple functions; stability; steady-state; switching frequency dependent averaged models; switching frequency effects modelling; Circuits; DC-DC power converters; Error correction; Power electronics; Pulse width modulation; Pulse width modulation converters; State-space methods; Steady-state; Switching converters; Switching frequency;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474878
