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

Volume

4

fYear

2000

fDate

8-12 Oct. 2000

Firstpage

2411

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome, Italy

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.883161

Filename

883161