Pico-Hydro Power Generation with Seamless Power Transition

This work primarily focusses on the multifunctional capability of voltage source converter (VSC) in pico-hydro based generation system with energy storage. This system is seamlessly capable of operating in grid/utility connected mode as well as in stand-alone mode using synchronization control technique. Adaptive fixed frequency second order generalized integrator with modified first order filter based control technique is implemented to generate reference fundamental current in utility connected mode. This current control enables the accurate estimation of fundamental current under influence of DC offset and noise. An efficient current control technique is used for VSC in both modes for voltage regulation, mitigation of power quality issues and seamless transfer of power between both modes. Brushless DC generator based pico-hydro power is generated and its peak power is extracted using P & O algorithm under perturbations. The seamless performance of the microgrid between both utilities connected mode and standalone mode is evaluated in Matlab Simulink platform.