DSP-based indirect-current-controlled STATCOM. Part 1: Evaluation of current control techniques

DSP-based implementation of a 3-phase static compensator (STATCOM) is presented. The closed-loop control scheme of the compensator is based on fuzzy logic. The hardware module of an IGBT-based PWM current-controlled voltage-source-inverter (PWM-CC-VSI) is taken as a STATCOM. Two different types of current control techniques, namely, direct and indirect current control are designed for the compensator. The experimental tests on the compensator are carried out with both techniques. The STATCOM is tested as an active filter (AF) to select the most promising technique for the current control.

[1]  Po-Tai Cheng,et al.  Hybrid solutions for improving passive filter performance in high power applications , 1997 .

[2]  Guang-Chyan Hwang,et al.  A stability approach to fuzzy control design for nonlinear systems , 1992 .

[3]  Laszlo Gyugyi,et al.  Power electronics in electric utilities: static VAR compensators , 1988, Proc. IEEE.

[4]  Osamu Miyashita,et al.  A predictive instantaneous-current PWM controlled rectifier with AC-side harmonic current reduction , 1997, IEEE Trans. Ind. Electron..

[5]  Seung-Gi Jeong,et al.  DSP based active power filter with predictive current control , 1995, Proceedings of IECON '95 - 21st Annual Conference on IEEE Industrial Electronics.

[6]  K. Tang,et al.  Comparing fuzzy logic with classical controller designs , 1987, IEEE Transactions on Systems, Man, and Cybernetics.

[7]  Laszlo Gyugyi,et al.  Dynamic compensation of AC transmission lines by solid-state synchronous voltage sources , 1994 .

[8]  T. W. Cease,et al.  Operation of /spl plusmn/100 MVAr TVA STATCON , 1997 .

[9]  G. D. Marques,et al.  An active power filter and unbalanced current compensator , 1997, IEEE Trans. Ind. Electron..

[10]  Hirofumi Akagi,et al.  Compensation characteristics of active power filter using multiseries voltage source PWM converters , 1986 .

[11]  Kamal Al-Haddad,et al.  A new control approach to three-phase active filter for harmonics and reactive power compensation , 1998 .

[12]  K. Srinivasan,et al.  Conforming and non-conforming current for attributing steady state power quality problems , 1998 .

[13]  M. B. Brennen,et al.  Vector analysis and control of advanced static VAr compensators , 1991 .