Three-phase Current Reconstruction
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Three-phase Current Reconstruction
Generally, in order to detect three-phase currents for a current control in motor drive systems, two or three current sensor is needed. On the other hand, a technique for reconstructing three-phase currents from a DC-link current sensor has been researched because of demand for cost reduction of the motor drive systems. In our laboratory, we have studied about a control method considering fluctuation of DC-link current on real vector for high-precision reconstructing three-phase currents.