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This paper introduces a new adaptive notch filtering approach to extract the harmonic and reactive current components for power quality purposes in grid-connected converters. The main function of this method is to provide synchronized harmonic and reactive current components for control purposes. The theoretical analysis is presented, and the performance of the method is experimentally evaluated....
With the rapidly developing of electrified railways, the adverse effects on the public power grid brought by traction power-supply system have been increasingly taken into account by railway and electricity department. In order to analyze the harmonics influence caused by traction power-supply system, the models based on PSCAD/EMTDC of typical traction power-supply system and public power grid have...
With the rapidly developing of electrified railways, the adverse effects on the public power grid brought by traction power-supply system have been increasingly taken into account by railway and electricity department. In order to analyze the harmonics influence caused by traction power-supply system, the models based on PSCAD/EMTDC of typical traction power-supply system and public power grid have...
On the base of the analysis of the actual distribution transformer load in a real urban electric power system, it will be shown that the conventional approach for the estimation of the economic transformer load, which is based on the criterion of transformer operation cost minimization, is not sufficient for the decision about the permissible load of distribution transformers in the grid. In modern...
The electric propulsive shipping power grid is a typical independent power supply system, and the anti-jamming ability to non-linear load is quit weak because of the limitation of generation capacity. So the influence of the harmonics becomes more serious. Meanwhile, the variation range of the voltage and frequency is often large, which can cause the tuning point deviation of the passive filter easily...
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