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A new filter topology and control system to improve input current waveforms of Sparse Matrix Converters (SMC) is presented. The topology is based on an Indirect Sparse Matrix Converter fitted with input ac filter, aided by a small dc link 2nd order filter, with smaller parameters compared to the ac input filter. The control system is designed to regulate the input current and dc link capacitor voltage,...
A new sensorless direct torque control scheme for matrix converter-fed interior permanent magnet synchronous machine is investigated in this paper. Comparing to the classical DTC, the proposed scheme features in low ripples in torque and flux, fixed switching frequency and unity input power factor. Moreover, it significantly reduces the harmonics in the input current even with a small input filter...
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