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Reduced switch count switched reluctance motor drives are among the technologies proposed to replace single-phase induction machines in industrial drives including the compressor market. The split-ac drive in particular can offer relatively high performance with half of the number of switches and diodes per phase as compared to the asymmetric bridge which is typically used in SRM drives. Its main...
Brushless doubly-fed machine (BDFM) has two sets of winding on the stator, the power winding connect with constant frequency constant voltage three-phase power frequency electrical source ,the controlled winding connect with the matrix converter (MC). MC possess the capability of bi-directional power flow, can simultaneously provide sinusoidal input current and output voltage. The phase of input current...
Conventional pulse-width modulated inverters cause switching of common-mode voltage at the terminals of ac machines, which result in undesirable bearing currents and damage to the bearing. This paper presents a two-level indirect-matrix converter-based direct-link drive for three-phase open-end winding ac machines. The proposed topology suppresses common-mode voltage, outputs up to 1.5 times the peak...
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