Fault Ride-through Capability Implementation in Wind Turbine Converters Using a Decoupled Double Synchronous Reference Frame PLL
Location: DENMARK
Publication date: 2007-09-15
Published in: European Conference on Power Electronics and Applications 2007, Aalborg (Denmark) - EPE 2007
ref. DOI: 10.1109/EPE.2007.4417783

Local members

Alvaro Luna

PhD. Senior Researcher.

External members

Teodorescu, R. , Iov, F. , Blaabjerg, F.



This work exploits the decoupled double synchronous reference frame PLL (DDSRF-PLL) as an effective method for grid synchronization of WT's power converters in the presence of transientfaults in the grid. The DDSRF-PLL uses a dual synchronous reference frame and a decoupling network to effectively separate the positive- and negative-sequence voltage components in a fast and accurate way. Excellent behavior of the DDSRF-PLL is demonstrated experimentally. Once sequence components of the faulty grid voltage are properly identified several algorithms computing current references are developed. Additionally, different power delivery strategies toride-through grid faults are discussed and simulations results are presented. As a conclusion, it will be demonstrated that certain control strategies ensure a stable operation of the front-end inverter while the grid voltage is supported by means of injection of instantaneous reactive power at the same time.


Associated projects

National public