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.
Palabras clave: Voltage control; Custom power devices; DVR; Active filters; Harmonics; Synchronous reference frames
International Journal of Electrical Power & Energy Systems. Volumen: 69 Páginas: 344-353
Índice de impacto JCR y cuartil Scopus: JCR impact factor: 2.587 (2015); 4.418 (2018).
Referencia DOI: 10.1016/j.ijepes.2015.01.013
Publicado en papel: Julio 2015. Publicado on-line: Febrero 2015.
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, Julio 2015. [Online: Febrero 2015]