Nonlinear Compensation in Digital Controller of Switching DC-DC Converters

Author

He, Mingzhi ; Xu, Jianping ; Zhou, Zhongwen ; Chen, Ni ; Zhou, Guohua

Author_Institution

Southwest Jiaotong Univ. Chengdu, Chengdu

fYear

2007

Firstpage

1269

Lastpage

1273

Abstract

Digital control of switching dc-dc converters brings many benefits including capability to implement advanced control algorithm that is often complex. Nonlinear compensation function with digital PID of power coefficients is proposed in this paper. The describing function is adopted for analysis. The transient response under different load variations is investigated by simulation and compared with the converters employing linear PID compensation. The experiment system is also set up on PGA platform to verify the analysis and simulation results. By comparison, nonlinear compensated converter has much better transient performance than the linear compensated one.

Keywords

DC-DC power convertors; digital control; field programmable gate arrays; nonlinear control systems; three-term control; DC-DC converter; FPGA platform; advanced control algorithm; digital PID controller; nonlinear compensation; Algorithm design and analysis; DC-DC power converters; Digital control; Hysteresis; Nonlinear control systems; Radio control; Switching converters; Three-term control; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on

Conference_Location

Kokura

Print_ISBN

978-1-4244-1473-4

Type

conf

DOI

10.1109/ICCCAS.2007.4348278

Filename

4348278