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This paper proposes a method for direct torque control of Brushless DC (BLDC) motors. Evaluating the trapezium of back-EMF is needed, and is done via a sliding mode observer employing just one measurement of stator current. The effect of the proposed estimation algorithm is reducing the impact of switching noise and consequently eliminating the required filter. Furthermore, to overcome the uncertainties...
This paper describes the optimal operation performance of a Brushless DC Motor (BLDC) fed by a z-source inverter accompanying with photovoltaic (PV) system, driving a water pumping system. The proposed system employs a Z-Source Inverter (ZSI) to extract the Maximum Power from a Photovoltaic array to supply the BLDC motor simultaneously. Utilizing the ZSI provides some advantages such as high efficiency...
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