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Technical Dialogue

Power Quality and EMI

D06.1 - Ultralocal PQ Theory: A New Approach for Model-Free Predictive Direct Power Control of Shunt Active Power Filters

Thursday, March 20, 2025
11:30 AM – 1:30 PM ET
Location: Level One, Hall A3
This paper introduces a new active and reactive powers (PQ) theory based on the ultralocal model to apply a model-free predictive direct power control (MF-PDPC) for shunt active power filters (SAPFs). In the proposed PQ theory, general dynamic equations are defined for the active and reactive powers using the voltages of two correspondent nodes and unknown disturbance terms, which are estimated in real time by the proposed PQ observers. The Convergence of the observers is proven through the Lyapunov theory. Putting to work the new PQ theory, an MF-PDPC method is presented in this study for SAPF, which does not depend on the system parameters. Despite the conventional model predictive direct power control, which utilizes the current predictions to perform power control, the proposed MF-DPDC directly predicts the active and reactive powers in the next sampling instant. The effectiveness of the proposed theory is verified by simulations.