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This work presents a Neural Networks based intelligent Active Power Filter control unit for harmonics current elimination. The paper is centered on an Improved Three-Monophase (ITM) method and a novel one called Two-Phase Flow (TPF) method for detecting harmonics from disturbed currents due to non linear loads in electric power systems. The TPF method introduces new currents decomposition in the DQ-space...
The model and the normal control method of the cascaded H-bridge active power filter is described firstly in this paper. However, problems exist in the normal control. One of the main problems is the unbalance of DC capacitor voltages of the H-bridge units. In this paper, an improved method for DC capacitor voltages control of the cascaded H-bridge active power filter is presented. With slightly shifting...
With the continuous development of water-saving irrigation, agricultural productpsilas deep process, greenhouse control in the agriculture, more and more variable frequency equipments, rectifier devices and other power electronic equipments have been used. But owing to the use of these equipments, harmonic pollution problem in power grid is more serious. Active filter is an effective method to the...
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