This paper proposes a new technique for grid synchronization under unbalanced and distorted conditions, i.e., the Dual Second Order Generalised Integrator - Frequency-Locked Loop (DSOGI-FLL). This grid synchronization system results from the application of the instantaneous symmetrical components method on the stationary and orthogonal aß reference frame. The second order generalized integrator concept (SOGI) is exploited to generate in-quadrature signals used on the aß reference frame. The frequency-adaptive characteristic is achieved by a simple control loop, without using either phase-angles or trigonometric functions. In this paper, the development of the DSOGI-FLL is plainly exposed and hypothesis and conclusions are veritled by simulation and experimental results.
|Title of host publication||IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics|
|Number of pages||6|
|Publication status||Published - 2006|
|Event||IECON - Annual Conference on IEEE Industrial Electronics (32nd : 2006) - Paris, France|
Duration: 6 Nov 2006 → 10 Nov 2006
|Conference||IECON - Annual Conference on IEEE Industrial Electronics (32nd : 2006)|
|Period||6/11/06 → 10/11/06|