Dear IEEE Members, Dear Colleagues, On behalf of Lebanon Section Jt. Chapter, IE13/PE31/CAS04/PEL35 and Lebanese International University IEEE SB, we would like to invite you to attend the webinar entitled “Single-phase Parallel &series connected Inverters” by Prof. Sangib Kumar Panda on Friday July 22, 2022 from 3:00 till 4:00 PM Beirut zone time. Abstract: Single-phase inverter control techniques for interfacing renewable energy sources with micro-grid – Parallel and series connected inverter topologies with active and reactive power flow control along with grid current shaping Renewable energy sources (RESs) have been receiving significant attention recently worldwide as a sustainable alternative type of energy supply in the energy mix. Inverters are being used to convert the dc voltage into ac voltage before being injected into the grid or isolated loads. In this presentation: – A novel current control technique is proposed to control both active and reactive power flow from a renewable energy source feeding a micro-grid system through a single-phase parallel connected inverter. The parallel connected inverter ensures active and reactive power flow from the grid with low current THD even in the presence of non-linear load. A p-q theory-based approach is used to find the reference current of the parallel connected converter to ensure desired operating conditions at the grid terminal. The proposed current controller is simple to implement and gives superior performance over the conventional current controllers such as rotating frame PI controller or stationary frame Proportional Resonant (PR) controller. The stability of the proposed controller is ensured by direct Lyapunov method. A new technique based on the Spatial Repetitive Controller (SRC) is also proposed to improve the performance of the current controller by estimating the grid and other periodic disturbances. Detailed experimental results are presented to show the efficacy of the proposed current control scheme along with the proposed non-linear controller to control the active and reactive power flow in a single-phase micro-grid under different operating conditions. – A control strategy for a single-phase series connected inverter with the micro-grid is proposed to interface AC loads not only to regulate the load voltage under voltage disturbances but also, to control the load power drawn from the micro-grid. The inverter compensating voltage works in such a way that, irrespective of any type of disturbances in the micro-grid voltage (such as sag, swell or harmonic distortions), the load voltage is maintained at its rated voltage level with low THD in voltage. The proposed control strategy also facilitates a specific amount of active power flow (from renewable energy source) to the load irrespective of the micro-grid voltage condition. The rest of the load power is supplied by the micro-grid. To facilitate this control strategy a Spatial Repetitive Controller (SRC) is proposed and implemented in micro-grid phase (q ) domain to make the controller independent of the micro-grid frequency. The proposed controller ensures dynamic stability of the system even if there is a sudden change in the micro-grid frequency. Detailed experimental results are presented to show the efficacy of the proposed series inverter system along with the controller under different operating conditions. Click here to register: Regards, Abdallah Speaker(s): Sangib, Virtual: https://events.vtools.ieee.org/m/320095