Summary:
Tracking harmonic currents and voltages in electric power systems with custom power devices exceeds the capabilities of conventional Proportional+Integral controllers and more sophisticated algorithms are required, especially under grid-frequency variations. This paper presents a control method based on multiple reference frames for harmonic control in the context of a series active power filter. The proposed scheme allows recursive calculation when referring signals to reference frames rotating synchronously with harmonic equivalent space vectors whilst a minimum of trigonometric-function evaluations are required. Furthermore, the control of each harmonic can be dealt with using simple integral controllers applied to the transformed signals. The paper presents the closed-loop-stability analysis and experimental results of a series active power filter. A scenario with grid-frequency variations is considered to show the intrinsic adaptation capability of the proposed controller.
Keywords: Voltage control; Custom power devices; DVR; Active filters; Harmonics; Synchronous reference frames
JCR Impact Factor and WoS quartile: 2,587 - Q1 (2015); 5,000 - Q1 (2023)
DOI reference:
https://doi.org/10.1016/j.ijepes.2015.01.013
Published on paper: July 2015.
Published on-line: February 2015.
Citation:
M. Ochoa, J. Roldán-Pérez, A. García-Cerrada, J. Zamora, Efficient multiple-reference-frame controller for harmonic suppression in custom power devices. International Journal of Electrical Power & Energy Systems. Vol. 69, pp. 344 - 353, July 2015. [Online: February 2015]
