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In conventional grid-connected PV system, the control of real and reactive power is undertaken adjusting both modulation index and phase angle of the inverter. The maximum power point of the PV array is tracked by adjusting duty cycle of the dc-dc converter or modulation index of the inverter. The PWM pattern has to be optimized each time the index of modulation is changed which involves excessive...
This paper presents a three-phase grid-connected photovoltaic generation system with unity power factor for any situation of solar radiation. The modelling of the PWM inverter and a control strategy using dq0 transformation are proposed. The system operates as an active filter capable of compensate harmonic components and reactive power, generated by the loads connected to the system. An input voltage...
This paper deals with the use of grid-connected photovoltaic (PV) power plants for supplying the ancillary service of reactive power compensation to the distribution grid. A control strategy has been developed for controlling both real and reactive power exchanged with the distribution network. The paper suggests how the real and reactive power references should be selected in order to maximize the...
This paper presents the analysis of two different strategies for current injection of grid connected Photovoltaic (PV) systems. One of them is based on keeping the same phase of the grid and modifying the inverter voltage. While the other is based on a phase shifting strategy that allows for the possibility of controlling the active and reactive power injected to the grid. Harmonic and power profiles...
On the basis of the research on grid-connected technology of distributed generation system, in order to extend the full advantage of single-phase photovoltaic grid-connected energy and gain rapid electric energy conversion and high quality electric energy and achieve accurate control and reactive power and harmonic compensation, a control scheme of grid-connected in conjunction with harmonics presented...
This paper presents a three-phase grid-connected photovoltaic generation system with unity power factor for any situation of solar radiation. The model of the PWM inverter and a control strategy using dq0 transformation are proposed. The system operates as an active filter capable of compensate harmonic components and reactive power, generated by the other loads connected to the system. An input voltage...
This paper presents a three-phase grid-connected photovoltaic generation system with unity power factor for any situation of solar radiation. The model of the PWM inverter and a control strategy using dq0 transformation are proposed the system operates as an active filter capable of compensate harmonic components and reactive power, generated by the other loads connected to the system. A input voltage...
This paper presents a model of the three-phase PWM inverter and a control strategy using dqO transformation to be employed in a grid connected photovoltaic generation system. The proposed system operates as an active filter capable of compensate harmonic components and reactive power, generated by the other loads connected to the system. To control the power between the grid and photovoltaic system...
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