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Recently, the micro-grid term has become a vital topic concerning with small power systems which depend highly on renewable energy sources. Mode transition in the micro-grid is a crucial issue which requires an urgent consideration. In this paper, the mode transition cases from grid-tied mode to autonomous mode and vice versa are analyzed, and a new method for a smooth transition from grid-tied mode...
The increasing penetration of installed the wind turbines is leading the power system towards instability and requires robust controllers to overcome the instability issues. The conventional synchronous generator based wind turbines comprise of an uncontrolled rectifier, a dc/dc boost converter, a controlled inverter and a pitch blade controller in grid-tied mode. The dc/dc boost converter controls...
Present power Generation Company's suffering from increasing of load demand in day by day applications. This situation enhances the implementation of renewable energy sources. Many concepts have been evolved for the efficient generation from renewable energy sources. But synchronization of the generated energy to the grid is still in efficient with the usage of complex controllers and costly power...
Because of the intermittency of output PV power, the authors have developed and implemented the Perturb and Observe (P&O) MPPT technique using genetic algorithm (GA) to tune and obtain the optimum parameters of the PI controller for the standalone PV-diesel hybrid power system. This PI controller regulates the output of boost converter for PV system. The results of this control technique are compared...
In this paper an energy system topology consisting of a variable speed diesel generator (VSDG), PV using MPPT and single inverter is presented and considered to provide energy to an Isolated load at constant frequency and voltage. SMES is utilized to maintain DC-voltage bus steady during the unbalanced power between generating power of (PV-VSDG) and load demand by releasing (or absorbing) the power...
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