We are proud to announce that the paper entitled: “Non-Adjacent Demagnetization Detection in Direct-Drive Permanent Magnet Generators for Renewable Energy Systems” and authored by A. Sergakis, G. A. Skarmoutsos, M. Mueller and K. N. Gyftakis has been accepted for publication in the prestigious IET Electric Power Applications. The paper is an outcome of the MEGA WAVE PTO project. 

The paper's abstract is shown below.

Advancement of renewable energy technologies placed tidal, wave and wind energy systems at the forefront of sustainable power generation. Permanent magnet synchronous generators with high efficiency, modularity, and low power consumption, such as the lightweight and modular C-GEN design, have been applied successfully in these applications. The demagnetization condition of non-adjacent magnets in direct-drive permanent magnet generators is investigated, and different diagnostic approaches are evaluated. It is shown that non-adjacent demagnetization can produce false negative diagnostic alarms when familiar condition monitoring methods like the MCSA are applied. It presents solutions for faulty magnet detection of permanent magnet generators for tidal, wave, and wind energy harvesting, supported by numerical analysis and experimental testing. It is particularly novel that demagnetization in two non-adjacent magnets is investigated here, something not previously considered.