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A simple and cost-effective software-based resolver to digital converter together with a permanent magnet synchronous motor control system were presented. The proposed method incorporates software generation of the resolver carrier and using anti-tangent calculation for synchronous demodulation of the resolver outputs signal in such a way that there is a substantial savings on hardware like the costly...
Instead of directly sampling the phase currents, a technique that adopts a single current sensor in the dc link to reconstruct three-phase currents has arisen. Through this approach, the cost of servo systems can be reduced and the reliability can be improved. However, the duration of an effective vector may be so short that the phase current cannot be measured reliably by the conventional space-vector...
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