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Experimental evaluation of a CPT-based 4-leg active power compensator For distributed generation


Claudio Burgos-Mellado


Roberto Cardenas

Doris Saez

Professor of Electrical Energy Systems

Alessando Costabeber

Helmo Morales


Four-wire microgrids (MGs) and distribution systems are inherently unbalanced with the presence of negative and zero sequence components in voltages and currents. In small autonomous systems, the imbalance, in addition to the harmonic distortion produced by nonlinear loads, can significantly affect the power quality, loadability, and stability of the system. Furthermore, in isolated networks with significant generation from intermittent renewable energy sources, the stiffness of the system is reduced and this could amplify the effects of imbalance on the stability and power quality. To mitigate some of these problems, a novel methodology based on the application of a four-leg active power filter is proposed in this paper. The control of the compensator is based on the conservative power theory augmented by resonant controllers. The behavior of the proposed system is demonstrated using an experimental prototype deployed in a laboratory scale MG.


Burgos-Mellado, C., Hernández-Carimán, C., Cardenas, R., Saez, D., Sumner, M., Costabeber, A., & Morales, H. (2017). Experimental evaluation of a CPT-based 4-leg active power compensator For distributed generation. IEEE Journal of Emerging and Selected Topics in Power Electronics, 5(2), 747-759.

Journal Article Type Article
Acceptance Date Nov 10, 2016
Online Publication Date Nov 24, 2016
Publication Date Jun 1, 2017
Deposit Date Jul 5, 2017
Publicly Available Date Jul 5, 2017
Journal IEEE Journal of Emerging and Selected Topics in Power Electronics
Electronic ISSN 2168-6785
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 5
Issue 2
Pages 747-759
Keywords Active power filter, conservative power theory, resonant control, microgrids, imbalance, harmonic distortion
Public URL
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Additional Information 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.


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