Nagaraj, C.Manjunatha Sharma, K.2026-02-052021International Journal of Power Electronics, 2021, 14, 2, pp. 156-1791756638Xhttps://doi.org/10.1504/IJPELEC.2021.117063https://idr.nitk.ac.in/handle/123456789/23433Grid connected renewable sources are affected by harmonic distortion due to non-linear power electronics interfaces. Depending upon the nature of the load, many conversion stages are incorporated in the micro-grid which leads to increase in the losses. Therefore, in this paper, the AC-DC coupled hybrid micro-grid system is presented in which AC renewable sources and AC loads are connected to AC sub-grid and DC renewable sources and DC loads are connected to DC sub-grid. The shunt active power filter based 3? 4-leg bi-directional intermediate converter using d-q load current technique is proposed to achieve the power flow between AC and DC sub-grids. The MATLAB simulation is carried out, and the performance of the proposed system is analysed using the d-q load current technique based fuzzy logic and PI controller. The obtained results demonstrate that the overall system performance is improved with the d-q load current technique based fuzzy logic controller. © © 2021 Inderscience Enterprises Ltd.Computer circuitsControllersElectric invertersElectric load flowElectric power transmission networksFuzzy logicMATLABMicrogridsRectifying circuitsFuzzy logic controllersGrid connected renewable sourcesIntelligent controllersMatlab simulationsMicro-grid systemsPower electronics interfacePower flow controlsShunt active power filtersElectric power system control