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Analysis and design of direct power control (DPC) for a three phase synchronous rectifier via output regulation subspaces

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5 Author(s)
Escobar, G. ; Dept. of Appl. Math. & Comput. Syst., IPICyT, San Luis Potosi, Mexico ; Stankovic, A.M. ; Carrasco, J.M. ; Galvan, E.
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In this paper, the authors present a controller that directly regulates the active and instantaneous reactive power in a synchronous three-phase boost-type rectifier. The controller ensures a good regulation of the output voltage, and guarantees the power factor close to one. The controller builds upon the ideas of the well known direct torque control (DTC) for induction motors. In their case, the active and reactive powers replace the torque and flux amplitude used as the controlled outputs in DTC, thus motivating the name DPC-control. They show that a simple modification to the original algorithm makes the selection of the control inputs more accurate. To formalize this technique, they utilize the concept of output regulation subspaces. A modification is added to the basic controller to deal with disturbances such as unbalance and distortion in the source voltage. Finally, the proposed controller was tested both in simulations and experimentally, and illustrative results are presented.

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Power Electronics, IEEE Transactions on  (Volume:18 ,  Issue: 3 )