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Electric spring (ES) is a novel smart grid technology, which is based on power electronic components. It has multitude of benefits associated with its widespread use at distribution level, which includes voltage profile enhancement, power imbalance mitigation, and power quality improvement. With the ever increasing need of incorporating intermittent renewable energy sources (RES), electric spring...
This paper presents a novel robust control design approach for grid-connected voltage-source-inverter with uncertain grid-impedance. The proposed method is based on the fusion of intelligent and robust control theories. The controller is designed to achieve the highest convergence rate of the system for a certain uncertainty range. The control objective is to regulate the real and reactive power injected...
A fault ride through, power management and control strategy for grid integrated photovoltaic (PV) system with supercapacitor energy storage system (SCESS) is presented in this paper. During normal operation the SCESS will be used to minimize the short term fluctuation as it has high power density and during fault at the grid side it will be used to store the generated power from the PV array for later...
A fault ride through, power management and control strategy for grid integrated photovoltaic (PV) system with supercapacitor energy storage system (SCESS) is presented in this paper. During normal operation the SCESS will be used to minimize the short term fluctuation as it has high power density and during fault at the grid side it will be used to store the generated power from the PV array for later...
Renewable energy sources such as Solar, wind etc. have gained a lot of interest and application in the recent years, as they can provide electric power on a large scale and are environment friendly. The advancement in the technology of these renewable energy systems has been investigated now a days with a lot of interest. An integral component of the power electronics system that interfaces a renewable...
A control strategy for grid integrated photovoltaic (PV) system is presented in this paper. To capture the maximum available power from PV panels, an Incremental conductance(IC) method is implemented. Since the power generated from the PV array is DC, a voltage source inverter (VSI) with its independent active and reactive power control is implemented to transfer the generated power to the grid. The...
The dynamic nature of the distribution network challenges the stability and control of the microgrids. In this paper, nonlinear model of the autonomous microgrid is presented. Optimal controller design and power sharing coefficients is carried out in this mode. The control problem has been formulated as an optimization problem where particle swarm optimization (PSO) is employed to search for optimal...
The dynamic nature of the distribution network challenges the stability and control effectiveness of the microgrids in both grid-connected and autonomous modes. In this paper, linear and nonlinear models of microgrids operating in different modes are presented. Optimal design of LC filter, controller parameters, and damping resistance is carried out in case of grid-connected mode. On the other hand,...
In this paper, optimal controller design of the nonlinear model of an autonomous inverter-based microgrid has been used. The controller is optimized to reject the high frequency disturbances and damp the output LC filter to avoid resonance with the external network. The control problem has been formulated as optimization problem. The optimal controller parameters have been obtained by using the particle...
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