Reactive Power Compensation in Wind Energy Systems through Resonant Corrector in Distributed Static Compensator

摘要

This paper proposes a resonant corrector-based control for the distributed static compensator (DSTATCOM) to compensate voltage and reactive power in a wind energy system (WES). The sinusoidal system transformation to the dq0 reference frame is usually made in order to model proportional-integral (PI) controllers in three-phase power systems. Nevertheless, PI controllers cannot remove completely voltage transients, generating amplitude, and phase voltage errors in the WES response. However, voltage and reactive power compensation in the abc reference frame can be achieved using a DSTATCOM through a resonant corrector. The introduced control law allows the WES to work reliably without magnitude and phase errors, in steady state and under unbalanced transient conditions. The proposed control law is validated through simulations with MATLAB - Simulink~® (Natick, Massachussetts, USA) and experimental laboratory tests using the concept of rapid control prototyping and the real-time simulator Opal-RT~® Technologies (Montreal, QC, Canada).