TY - JOUR TI - Efficient multiple-reference-frame controller for harmonic suppression in custom power devices JO - International Journal of Electrical Power & Energy Systems A1 - García-Cerrada, A., Ochoa, M., Roldán-Pérez, J., Zamora, J. VL - 69 IS - PY - 2015-07-01 PS - 344 EP - 353 DO - 10.1016/j.ijepes.2015.01.013 AB - 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. ER -