Power System Perspective in Underwater WPT: Suppressing Eddy Current Losses via Partial Reactive Power Processing

Underwater wireless power transfer (UWPT) systems face significantly reduced efficiency and output fluctuations due to the unique environment. This article proposes a partial reactive power processing (PQP) method from the power system perspective to address the issues. This work considers the load as a PQ node, and reactive power regulation is achieved by establishing another PQ node on the secondary side to reduce eddy current losses. The cooperation of the two PQ nodes forms the PQP architecture. Experimental results demonstrate that the proposed method reduced the proportion of ECL from 82.8% to 70.3%. The transmission efficiency has increased by 1.355%.