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Control Method of the DFIG Connected to a DC Link through a Diode Bridge

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DOI: 10.4236/epe.2013.54B020    3,931 Downloads   5,457 Views   Citations

ABSTRACT

This paper presents a control method for the Doubly-fed Induction Generator connected to a dc link through a diode bridge on the stator. In this system, the rotor is fed, at the slip frequency, by a PWM electronic converter and the stator is directly connected to the dc link using a simple diode bridge. The cost of power electronics is reduced in this system when compared with the classic DFIG machine because the system uses less one PWM inverter and additionally it uses a diode bridge. The application in mind is for microgrids. Microgrids need several elements that should work together. The usual way to connect these elements is to use power electronic devices in a common dc link. This paper presents a new form for the DFIG for this application and presents a control system for the inner control loop. Simulation and experimental results show that the system can work acceptably using a stator frequency near the rated frequency of the machine.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

G. Marques and M. Iacchetti, "Control Method of the DFIG Connected to a DC Link through a Diode Bridge," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 102-108. doi: 10.4236/epe.2013.54B020.

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