A nonlinear control method for three-phase three-level NPC rectifier

Author

Zhi, Zhang ; Yun-xiang, Xie ; Jiang-yuan, Le ; Lin, Chen

Author_Institution

South China Univ. of Technol., Guangzhou, China

fYear

2009

fDate

17-19 June 2009

Firstpage

4985

Lastpage

4990

Abstract

A nonlinear control strategy is proposed for the three-phase three-level NPC rectifier based on the feedback linearization theory. The proposed strategy can realize the decoupled control of active and reactive current of the VSR in the d-q frame. A strategy of changing the voltage adjusting coefficient to adjust the dwelling time of the positive and the negative small vectors to control the neutral point potential balance is proposed based on the simplified SVM. The control strategy is simulated and simulation results prove the validity of the proposed modeling and control strategy.

Keywords

nonlinear control systems; rectifiers; voltage control; SVM; decoupled control; feedback linearization theory; neutral point potential balance; nonlinear control method; three-phase three-level NPC rectifier; voltage; Capacitors; Digital modulation; Diodes; Harmonic distortion; Linear feedback control systems; Pulse width modulation; Rectifiers; Support vector machines; Switching converters; Voltage control; Decoupling; Feedback linearization; Neutral-point voltage balance; Three-phase three-level rectifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference, 2009. CCDC '09. Chinese

Conference_Location

Guilin

Print_ISBN

978-1-4244-2722-2

Electronic_ISBN

978-1-4244-2723-9

Type

conf

DOI

10.1109/CCDC.2009.5194931

Filename

5194931