@article { , title = {A Control Algorithm Based on the Conservative Power Theory for Cooperative Sharing of Imbalances in 4-Wire Systems}, abstract = {© 1986-2012 IEEE. A cooperative control scheme based on the conservative power theory (CPT) is proposed, which can share imbalances in three-phase four-wire droop-controlled systems. By utilizing the CPT, the balanced, unbalanced, and distorted components of the currents and powers in a microgrid can be identified. Using control loops based on virtual impedances and implemented in the stationary a-b-c frame, the imbalances and harmonics are shared between the different four-leg inverters in the microgrid. A secondary control loop is implemented to regulate the maximum voltage imbalance/distortion at the point of common coupling or any other point in the microgrid. The theoretical background of the method is presented, and experimental validation is demonstrated using a laboratory-scale microgrid with two inverters operating at 5 kW.}, doi = {10.1109/tpel.2018.2869866}, eissn = {1941-0107}, issn = {0885-8993}, issue = {6}, journal = {IEEE Transactions on Power Electronics}, pages = {5325-5339}, publicationstatus = {Published}, publisher = {Institute of Electrical and Electronics Engineers}, url = {https://nottingham-repository.worktribe.com/output/1257139}, volume = {34}, keyword = {Electrical and Electronic Engineering}, year = {2019}, author = {Burgos-Mellado, Claudio and Cardenas-Dobson, Roberto and Saez, Doris and Costabeber, Alessandro and Sumner, Mark} }