PG student, Dept of EEE, K.S.Rangasamy College of Technology, [email protected] Professor, Dept of EEE, K.S.Rangasamy College of Technology, [email protected] Abstract-This paper presents a mitigation of power quality problems such as shortage of reactive power, voltage fluctuations, voltage and current harmonics due to wind farms connected to the non linear loads. The fault occur ...

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Micro-grid is a novel conceptual power system for smooth installation of many Distributed Generators which is used for distributing the power in order to provide high quality. The most of micro-grids adopt ac distribution as well as conventional po...

Under unbalanced grid voltage faults, the output power oscillation of a grid-connected inverter is an urgent problem to be solved. In traditional topology inverters, it impossible eliminate and simultaneously maintain balanced current waveform. this paper, considering solvability reference matrix equation, inherent mechanism analyzed, modified with auxiliary modules inserted in series between f...

Because of installation for local consumers and since it is free of all contaminations, connecting photovoltaic cells to the grid via single-phase inverter is significantly on the rise. In this paper, a new simple current control is proposed for a single-phase grid-connected voltage source inverter. Using the PQ theory and modelling a single-phase system as an unbalanced three-phase system, a m...

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In the conventional structure of the wind turbines along with the doubly-fed induction generator (DFIG), the stator is directly connected to the power grid. Therefore, voltage changes in the grid result in severe transient conditions in the stator and rotor. In cases where the changes are severe, the generator will be disconnected from the grid and consequently the grid stability will be attenu...

Abstract. A novel multilevel active rectifier based on series connection of asymmetrical H-bridge cells is presented in this paper. The converter can generate seven voltage levels with eight power switches. However it can lead the output capacitor voltage unbalanced. Then PI controller has been applied to guarantee the output DC voltage in the outer loop. A proportion controller is used to cont...

Increased level of automation by using sophisticated equipment employing switched mode supplies, use of power electronic controllers and non-linear loads have increased disturbances and distortions in electric grid. These distorted utility conditions create additional problems of synchronization for line interactive power converters with grid. Further certain transient events like unsymmetrical...

In this paper, a locational marginal pricing algorithm is proposed to control the voltage in unbalanced distribution grids. The increasing amount of photovoltaic (PV) generation installed in the grid may cause the voltage to rise to unacceptable levels during periods of low consumption. With locational prices, the distribution system operator can steer the reactive power consumption and active ...