4A PMSG based Flexible Input WECS for Grid using Power Converter and MFT Device

Abstract

Frame work of wind energy conversion system(WECS) using permanent magnet synchronous generator(PMSG) is proposed in this article. The system proposition combines a diode rectifier, converter and a pulse width modulator (PWM), Medium Frequency Transformer (MFT) with current source converter (CSC). In this system proposition, an additional control freedom is broached to quantify the DC link current for empowering the system operation in full range. Further Active power control by d-axis and reactive power control by q-axis is exercised by grid voltage orientation method. Ascertainment of phase angle for utility voltage is espied using Phase Lock Loop (PLL) in d-q synchronous reference frame. This system proposition scheme ensures the concrete benefits of minimum cost, well quality power conversion result for the variable speed of WECS.