Study on Mathematical Model and Lyapunov-Based Control for Three-Level NPC Voltage-Source Rectifier

Author

Yongqing, Meng ; Zheng, Liu ; Shen ChuanWen ; Yi, Liang ; Yanmin, Su ; Ting, Yu

Author_Institution

Dept. of Electr. Eng., Xi´´an Jiaotong Univ.

Volume

2

fYear

2006

fDate

9-13 July 2006

Firstpage

1949

Lastpage

1954

Abstract

In this paper, the mathematical model of three-level neutral-point-clamped (NPC) voltage source rectifier (VSR) using switching functions is founded firstly, and its operating principle is analyzed. Then a new nonlinear control law based on Lyapunov´s stability theory for the PWM rectifier is presented. With this control law, the converter can be stabilized globally for handling large-signal disturbances, and exhibit good transient response. Also, by designing PI controller of DC-link voltage and adding feedforward control of load current, the steady state error of the converter resulting from parameter uncertain can be eliminated effectively. Computer simulations of the system confirm the validity of the mathematical model and the effectiveness of the proposed control strategy

Keywords

Lyapunov methods; PI control; PWM rectifiers; control system synthesis; feedforward; mathematical analysis; nonlinear control systems; power convertors; stability; voltage control; DC-link voltage; Lyapunov-based control; PI controller; PWM rectifier; feedforward control; functions; large-signal disturbances; load current; mathematical model; nonlinear control law; stability theory; three-level NPC voltage-source rectifier; three-level neutral-point-clamped voltage source rectifier; transient response; Computer errors; Computer simulation; Error correction; Lyapunov method; Mathematical model; Pulse width modulation; Rectifiers; Steady-state; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2006 IEEE International Symposium on

Conference_Location

Montreal, Que.

Print_ISBN

1-4244-0496-7

Electronic_ISBN

1-4244-0497-5

Type

conf

DOI

10.1109/ISIE.2006.295763

Filename

4078213