Title :
A Control Method for PWM AC/DC Converter by Use of Inductor Current Feed Forward and Feedback
Author :
Zhang, Q. ; Zhang, C.W. ; Zhang, X. ; Shen, W.X.
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol.
Abstract :
The paper proposes a control strategy for three-phase pulse width modulated (PWM) voltage source converter (VSC) used in distributed grid-connected generation system. The key is to take the current of inductor in the filter as feedback to regulate the output current, with the addition of a feed-forward control scheme into the inner current loop. The paper explores the fundamental performance issues of the usage of inductor current feed-forward concerning their contributions to the transient system response and the power factor. The proposed control method is implemented in a digital signal processor (DSP) based system and tested on an experimental 30 kVA prototype unit. The results exhibit the effectiveness of the proposed control strategy
Keywords :
AC-DC power convertors; PWM power convertors; digital signal processing chips; distributed power generation; electric current control; feedback; feedforward; power factor; power filters; power inductors; testing; transient response; 30 kVA; DSP; PWM AC-DC converter; PWM VSC; digital signal processor; distributed grid-connected generation system; feed-forward control scheme; inductor current feed forward; inductor current feedback; output current regulation; power factor; three-phase pulse width modulated voltage source converter; transient system response; Control systems; DC-DC power converters; Feedback; Feedforward systems; Feeds; Inductors; Power conversion; Pulse width modulation; Pulse width modulation converters; Voltage control;
Conference_Titel :
Industrial Electronics and Applications, 2006 1ST IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
0-7803-9513-1
Electronic_ISBN :
0-7803-9514-X
DOI :
10.1109/ICIEA.2006.257294
