Design of toroidal core for magnetic energy harvester near power line considering saturation

摘要

In this paper, the toroidal core design with improve power density for magnetic energy harvester is proposed. Around the power line, leakage magnetic field is a promising energy source. However, the problem of magnetic saturation can cause power performance degradation of the harvester. To improve power density of magnetic energy harvester, we controlled the inner radius of toroidal core by considering magnetic saturation effect. The proposed idea is validated by theoretical and measurement results.