Title :
Nonlinear PI control for three-phase PWM AC-DC converter
Author :
Guo, Wenjie ; Lin, Fei ; Zheng, Trillion
Author_Institution :
Sch. of Electr. Eng., Beijing Jiaotong Univ.
Abstract :
This paper proposes a nonlinear PI control strategy for three-phase PWM AC-DC voltage source converter. The nonlinear controller, consisting of the special nonlinear function of the error and the traditional PI regulator, improves the DC voltage response as well as the robustness against the load uncertainty. In addition, the sinusoidal AC current and unity power factor is achieved. This controller is also easy to be realized. The simulation and experimental results are provided to verify the validity of the proposed control algorithm
Keywords :
AC-DC power convertors; PI control; PWM power convertors; nonlinear control systems; nonlinear functions; power factor; DC voltage response; load uncertainty; nonlinear PI control; nonlinear error function; sinusoidal AC current; three-phase PWM AC-DC converter; unity power factor; AC-DC power converters; Analog-digital conversion; Error correction; Pi control; Pulse width modulation; Pulse width modulation converters; Regulators; Robust control; Uncertainty; Voltage control;
Conference_Titel :
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
0-7803-9252-3
DOI :
10.1109/IECON.2005.1569057
