Renewable Energy Based DC Micro-grid with Energy Storage

What is it about?

This work presents an improved power management control strategy of a hybrid DC micro-grid system consisting of photo-voltaic cell, wind turbine generator, battery energy storage (BES), fuel cell and electrolyser.

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Why is it important?

This work presents an improved power management control strategy of a hybrid DC micro-grid system consisting of photo-voltaic cell, wind turbine generator, battery energy storage (BES), fuel cell and electrolyser. Based on the voltage and state of charge (SoC) of BES, fuel cell and electrolyser, the proposed control scheme improved the dynamics of the DC-link voltage and contributes a better power management between each generation/source and load. A gain control technique is implemented in the grid-side inverter controller to regulate the modulation index and improving the voltage stability of the DC-link. For a reliable operation of the DC micro-grid under standalone or prolonged islanding mode of operation, a priority based load shedding algorithm is proposed for maintaining proper power coordination between different energy sources and storage devices.

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