 The resonance between power-factor-correction capacitors and the line reactance is a common cause for harmonic problems in traditional power systems. Grid-connected inverters integrating renewable energy sources into the grid exhibit capacitive output impedance at harmonic frequencies and may also resonate with the grid impedance. In addition to possible amplification of current and voltage ...

Received Oct 15, 2016 Revised Dec 21, 2016 Accepted Dec 31, 2016 The use of a new control method for grid-connected inverters for reducing the output current harmonic distortion in a wide range of grid-connected distributed generation (DG) applications, including wind turbine (WT) and fuel cell (FC) inverters is proposed in this paper. The control method designed to eliminate main harmonics in ...

-Because of the acute shortage of conventional energy resources, renewable energy harness is gaining attention. Voltage source inverter forms the interface to feed the power from the renewable source to utility. In order to increase the modularity of the system, the use of several parallel inverters of reduced rating is preferred. An effective control strategy to maintain the amplitude and freq...

Growing energy demand and environmental consciousness have reevoked human interest in grid-connected photovoltaic (PV) systems. This work is focused on the modelling and simulation studies of the dynamic behaviour of a grid connected photovoltaic system. The model is implemented using MATLAB/Simulink with the SimPowerSystems Block Set. This work also presents the results of a comparative study ...

Environmental conditions and operational modes may significantly impact the distortion level of the injected current from single-phase grid-connected inverter systems, such as photovoltaic (PV) inverters, which may operate in cloudy days with a maximum power point tracking, in a non-unity power factor, or in the low voltage ride through mode with reactive current injection. In this paper, the m...

In today’s and future’s electrical power grid system, regenerative energy sources like photovoltaic (PV) power systems consisting of PV panels and grid-connected inverters are very popular in domestic as well as in commercial power plants. High competitive pressure among PV power system providers due to cut inverter’s costs can be observed. Therefore different technical approaches have to be ev...