Title :
Discussions on control loop design in average current mode control [PWM DC/DC power convertors]
Author :
Sun, Chunxiao ; Lehman, Brad
Author_Institution :
Div. of Motion Technol., Pacific Sci./Danaher Corp., Wilmington, MA, USA
Abstract :
Large control output ripple in ACMC (average current mode control) PWM DC/DC converters exposes challenges in accurate modeling and design. In this paper, superposition models are utilized to perform control design analysis for ACMC PWM DC/DC converters. The ACMC DC/DC PWM converter system is converted to a cascade control structure and a step-by-step control design algorithm is then proposed. The control design algorithms differ from existing, conventional algorithms because they carefully compensate for newly discovered feed forward influence in the model.
Keywords :
DC-DC power convertors; PWM power convertors; cascade control; compensation; control system analysis; control system synthesis; electric current control; feedforward; PWM DC/DC power convertors; average current mode control; cascade control structure; compensation; control loop design; control output ripple; control simulation; step-by-step control design algorithm; superposition models; Circuits; Control design; DC-DC power converters; Design methodology; Feeds; Frequency; Low-frequency noise; Predictive models; Pulse width modulation; Pulse width modulation converters;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome, Italy
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.883161
