Enhanced Decoupled Double Synchronous Reference Frame Current Controller for Unbalanced Grid-Voltage Conditions

摘要: In the last few years, restrictive grid codes have arisen to ensure performance and stability of electrical networks, which experience a massive integration renewable energy sources distributed generation systems that are normally connected through electronic power converters. these codes, injection positive- negative-sequence current components becomes necessary for fulfilling, among others, low-voltage ride-through requirements during balanced unbalanced faults. However, classical dq controllers, applied converters, under grid-voltage conditions is highly deficient, due unavoidable appearance oscillations. This paper analyzes double synchronous reference frame controller improves its structure by adding decoupling network estimating compensating undesirable Experimental results will demonstrate validity proposed decoupled DSRF controller.