A wind energy conversion system employing dq control has been proposed for extracting maximum power from a wind-driven PMSG feeding and feeding it to a three-phase utility grid. It consists of a diode bridge rectifier, SEPIC converter and a voltage source inverter (VSI) and fuzzy logic controller. Besides supplying power to the ac grid, the proposed scheme also feeds a local dc load, as the dc link voltage is maintained constant. The fuzzy logic controller is used for varying the duty ratio of the SEPIC converter to maintain the output dc voltage constant. The stability of the voltage is obtained by maintaining constant output voltage from the SEPIC converter. Therefore, by providing continuous supply to the voltage source inverter efficiency of the system is improved and also THD is reduced.
E.Aruna, Dr.C.Venkatesan (2019).
"A NOVEL VOLTAGE STABILITY FOR UTILITY GRID BY USING SEPIC CONVERTER".
International Journal of Contemporary Research in Computer Science and Technology,
5(2), pp. 12-16.
