Title :
Design and research of high-power LED driver power supply based on optimized PID algorithm
Author_Institution :
Jilin Bus. & Technol. Coll., Changchun, China
Abstract :
High-power LED illumination system has high requirements on the LED driver power supply including conversion efficiency, dimming efficiency and constant-currency accuracy. In this paper, the design is on the basis of fly-back LED driver by SSL2101 and makes use of feedback and control theory of control system, hardware works in the closed-loop state, Meanwhile, we adopt genetic algorithm and direct search strategy to optimize PID parameters in the software design, the optimized PID algorithm can control the power better, and closed-loop control in the software is reached. We will achieve precise control of output current and improve the output current stability, load capacity and conversion efficiency of the current source.
Keywords :
closed loop systems; driver circuits; feedback; genetic algorithms; light emitting diodes; power supplies to apparatus; three-term control; closed-loop state; control theory; direct search strategy; feedback; genetic algorithm; high-power LED driver power supply; optimized PID algorithm; output current stability; Algorithm design and analysis; Light emitting diodes; Pulse width modulation; Switching circuits; Fly-back driver; PFC controller; PID algorithm; energy efficiency; hybrid optimization algorithms;
Conference_Titel :
Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4244-7957-3
DOI :
10.1109/CMCE.2010.5610291
