The application self-tuning PID control based on fuzzy parameter in compensation for DUPS

In view of the influence of band-pass filter on realtime performance of voltage compensation signal detection and compensation accuracy, a direct compensation signal detection method for dynamic uninterruptible power supply (DUPS) based on fuzzy parameter and self-tuning PID control is proposed. Based on the proposed method, the fundamental component can be rapidly extracted from fault signal, and then the positive sequence component in fundamental component can also be extracted by means of instantaneous decomposition link, on this basis the voltage compensation can be solved by direct-detection algorithm. Simulation results show that the proposed detection method that integrates fuzzy based self-tuning PID control with direct-detection algorithm is easy to implement and possesses good real-time performance, so it is suitable to the direct detection of the compensation of DUPS.