Self-Programmable PID Compensator for Digitally Controlled SMPS
- 1 January 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 10935142,p. 112-116
- https://doi.org/10.1109/compel.2006.305661
Abstract
This paper shows an auto-tuning system for digitally controlled switch-mode power supplies (SMPS) that automatically adjusts parameters of PID compensator based on pre-specified bandwidth requirements. The PID compensator parameters are determined from intentionally introduced limit cycle oscillations (LCOs) through two consecutive auto-tuning procedures. First, the placement of poles and zeros is defined from LCOs at the corner frequency of the power stage. Then, the gain of the PID compensator is found from the oscillations occurring at the desired crossover frequency of the system. The proposed auto-tuning procedure is verified through Matlab/Simulink simulations that show fast load transient response and short settling timeKeywords
This publication has 5 references indexed in Scilit:
- Small-Signal$z$-Domain Analysis of Digitally Controlled ConvertersIEEE Transactions on Power Electronics, 2006
- System Identification of Power Converters With Digital Control Through Cross-Correlation MethodsIEEE Transactions on Power Electronics, 2005
- Autotuning of Digitally Controlled Buck Converters Based on Relay FeedbackPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Design of a digital PID regulator based on look-up tables for control of high-frequency DC-DC convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Quantization resolution and limit cycling in digitally controlled PWM convertersIEEE Transactions on Power Electronics, 2003