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Highlights • Manage and control the active and reactive power, considering the LVRT control. • The reactive power at PCC is controlled using the PI reactive power control (PIRPC). • Distributing the power references proportionally on WTs. • From a security point of view, each WT operates far from its maximum limits. • Providing the demanded reactive power without extra devices for compensation. This paper presents the development of a supervision system for a large wind farm based on squirrel cage induction generator. The aim is to manage and control the active and reactive power, considering the Fault Ride-Through (FRT) capability. Each squirrel cage induction generator (SCIG) is controlled to produce the maximum power, provide an active and a reactive power predetermined by the transmission system operator (TSO) or to satisfy the grid code requirements (GCRs). The reactive power at PCC is distributed over the all wind turbines using the proportional distribution algorithm and controlled using the proposed PI reactive power control (PIRPC) method. The effectiveness of the proposed control strategies and the supervisory approach is proven via of simulation results. It shows that they are efficient, guarantee good performance, satisfy the GCRs and ensure that the wind farm behaves as a conventional power plant. [ABSTRACT FROM AUTHOR]

• The effectiveness of the LCL filter is analyzed and compared to the RL filter. • Proposed a new Fuzzy-SMC control with minimum sensors for LCL filter control. • The advantages of proposed Fuzzy-SMC are compared to that of others controllers. • Evaluating the proposed control in terms of robustness and chattering attenuation. • Verification of the proposed method by demonstrative experimental assessments. This paper aims to improve the Total Harmonic Distortion (THD) performance, using a robust nonlinear controller, for a Grid-Side Energy Conversion System Based on LCL with damping resistance and without current sensor of the RC branch. The Sliding Mode Control (SMC) increases the THD because of the chattering phenomenon. But, the reduction of THD is considered as an advantage of the LCL filter. These harmonics are also decreased using the robust Fuzzy Sliding Mode Control (FSMC) and the elimination of RC sensor reduces the system cost. The DC bus voltage is controlled using the FSMC, taking into account the power loss. The evaluation of the reliability and performance of the proposed control system is achieved through a comparative study. The simulation and experimental results are carried out to validate the effectiveness of the proposed filter and control method of the grid-side converter. The proposed control system is capable of providing enhanced transient performance similar to that of the SMC, and keeps the steady-state harmonic spectra at the same level as those of the Vector Control (VC). [ABSTRACT FROM AUTHOR]