Title :
Dynamic modeling and control in average current mode controlled PWM DC/DC converters
Author :
Sun, Chunxiao ; Lehman, Brad ; Ciprian, Rosa
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
In this paper, an improved averaging technique for average current mode controlled (ACMC) pulse width modulated (PWM) DC/DC converters is proposed. The modeling procedure provides ripple estimation and improves switching time calculation for ACMC PWM DC/DC converters. As an application of the theory, an ACMC boost converter with two proportional-integral (PI) controllers for both current loop and voltage loop is presented. Results confirm that the new averaged models are more accurate than conventional averaged models
Keywords :
DC-DC power convertors; PWM power convertors; electric current control; two-term control; voltage control; PWM DC/DC converters; average current mode control; averaged models; boost converter; current loop; dynamic modeling; modeling procedure; proportional-integral controllers; ripple estimation; switching time calculation; voltage loop; Circuit topology; DC-DC power converters; Pi control; Proportional control; Pulse width modulation; Pulse width modulation converters; Sun; Switches; Switching frequency; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785657
