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Doubly fed induction generators used in wind energy applications require a source and power converter system to feed variable frequency AC voltage to its rotor. The paper presents a hybrid rotor injection system in which the rotor power can be drawn either from three-phase AC mains or a photo voltaic (PV) panel-battery combination. While drawing power from AC mains, the AC-DC converter used has a...
The characteristics of Cuk converters in discontinuous-capacitor-voltage mode are studied. A Cuk converter in this mode of operation is an inherent power factor corrector and features soft turn of switching. This paper proposes a Cuk converter in discontinuous-capacitor-voltage mode (DCVM) operation in order to reduce the total harmonic distortion (THD) of a three-phase rectifier. In the proposed...
Nonlinear rectifier circuits, having capacitors or inductors, are generally used as rectifier circuits, such as those in consumer electronics and appliances. It is known that such rectifiers generate various harmonics in the power system. To reduce these harmonic problems, various original PFC (Power Factor Correction) circuits have been proposed. Amongst these, Prasad-Ziogas, et al, have proposed...
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