Publisher : The Korean Institute of Power Electronics
DOI : 10.6113/TKPE.2016.21.1.58
Title & Authors
Design of the Single-loop Voltage Controller for Arbitrary Waveform Generator Kim, Hyeon-Sik; Chee, Seung-Jun; Sul, Seung-Ki;
This study presents a design method for a single-loop voltage controller that is suitable for an arbitrary waveform generator (AWG). The voltage control algorithm of AWG should ensure high dynamic performance and should attain sufficient robustness to disturbances such as inverter nonlinearity, sensor noise, and load current. By analyzing the power circuit of AWG, control limitation and control target are presented to improve the dynamic performance of AWG. The proposed voltage control algorithm is composed of a single-loop output voltage control, an inverter current feedback term to improve transient response, and a load current feedforward term to prevent voltage distortion. The guideline for setting control gain is presented based on output filter parameters and digital time delay. The performance of the proposed algorithm is proven by experimental results through comparison with the conventional algorithm.
AWG(Arbitrary Waveform Generator);Programmable power supply;Output voltage control;Single-loop PI voltage control;
K. S. Low, "A DSP-based variable AC power source," IEEE Trans. Instrum. Meas., Vol. 47, No. 4, pp. 992- 996, 1998.
F. R. S. Vincenzi, L. Silva, L. C. G. De Freitas, M. A. A. Freitas, E. R. Fernandes, J. B. Vieira, and L. C. Freitas, "Programmable AC power source used to analyze electronic equipment performance in the electrical power system quality concept," in Proc. IEEE APEC, pp. 1931-1937, 2008.
M. Schweizer, I. Lizama, T. Friedli, and J. W. Kolar, "Comparison of the chip area usage of 2-level and 3-level voltage source converter topologies," in Proc. IEEE IECON, pp. 391-396, 2010.
R. Zhang, V. H. Prasad, D. Boroyevich, and F. C. Lee, "Three-dimensional space vector modulation for four-leg voltage-source converters," IEEE Trans. Power Electron., Vol. 17, pp. 314-326, 2002.
H. Kim, S. J. Lee, and S. K. Sul, "Design of the feed forward controller in digital method to improve transient characteristics for dynamic voltage restorers," The Trans. of the Korean Institute of Power Electronics, Vol. 9, No. 3, pp. 275-284, 2004.
M. J. Newman, D. N. Zmood, and D. G. Holmes, "A comparative analysis of multiloop voltage regulation strategies for single and three-phase UPS systems," IEEE Trans. Power Electron., Vol. 18, No. 5, pp. 1176-1185, Sep. 2003.
M. Vilathgamuwa, A. A. D. Ranjith Perera, and S. S. Choi, "Performance improvement of the dynamic voltage restorer with closed-loop load voltage and current-mode control," IEEE Trans. Power Electron., Vol. 17, No. 5, pp. 824-834, Sep. 2002.
F. Liu, Y. Zhou, S. Duan, J. Yin, B. Liu, and F. Liu, "Parameter design of a two-current-loop controller used in a grid-connected inverter system with LCL filter," IEEE Trans. Ind. Electron., Vol. 56, No. 11, pp. 4483-4491, Nov. 2009.
H. Kim and S. K. Sul, "Compensation voltage control in dynamic voltage restorers by use of feed forward and state feedback scheme," IEEE Trans. Power Electron., Vol. 20, No. 5, pp. 1169-1177, Sep. 2005.
X. Wang, Y. W. Li, F. Blaabjerg, and P. C. Loh, "Virtual-impedance-based control for voltage-source and current-source converters," IEEE Trans. Power Electron., Vol. 30, No. 12, pp. 7019-7037, Dec. 2015.