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A new approach to averaged modeling of PWM converters with current-mode control

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2 Author(s)
Jian Sun ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Bass, Richard M.

A new approach to averaged modeling of PWM DC/DC converters with current-mode control is presented in this paper. The method is based on closed-form ripple functions obtained by applying the KBM (Krylov-Bogoliubov-Mitropolsky) algorithm. It overcomes the limitations of conventional methods based on geometrical calculations of the inductor current waveform. Application of the method is demonstrated by using a boost converter, and the derived model is compared with conventional ones and validated by detailed switching model simulation. The KBM algorithm has been implemented in a public-domain symbolic analysis program package so that the application of the new method can be fully automated

Published in:

Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on  (Volume:2 )

Date of Conference:

9-14 Nov 1997