Title :
A new approach to averaged modeling of PWM converters with current-mode control
Author :
Sun, Jian ; Bass, Richard M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
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
Keywords :
DC-DC power convertors; PWM power convertors; electric current control; inductors; power engineering computing; switching circuits; symbol manipulation; KBM algorithm; Krylov-Bogoliubov-Mitropolsky algorithm; PWM DC/DC converters; PWM converters; averaged modeling; boost converter; closed-form ripple functions; current-mode control; detailed switching model simulation; geometrical calculations; inductor current waveform; public-domain symbolic analysis program package; Automatic control; Current control; DC-DC power converters; Electric variables control; Inductors; Packaging; Power system modeling; Pulse width modulation; Pulse width modulation converters; Switches;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-3932-0
DOI :
10.1109/IECON.1997.671801
