Dear Colleagues,

Within the wind turbine industry, there is a general desire for developing larger and larger turbines, while simultaneously improving efficiency and reliability. At the same time, wave energy is at a stage where the last technology push still remains, before this may become a significant factor in the future energy supply system. Common to the two areas are, however, that they deal with extreme forces and/or torques, in terms of pitching, yawing, braking and transmission system in wind turbines, as well as the power take-off system in wave energy converters. Here, fluid power (oil hydraulic) technology, not only has the potential to overcome and solve many of the technical challenges, which are foreseen and which may otherwise be limiting factors, but also improve on existing solutions. For large scale wave energy converters, fluid power is for example the only realistic available technology capable of handling the extremely large and slowly reversing torques/forces.

The background for these expectations may be found in the development of new components, sensors and component types, which, not only bring forth new functionality, but also yield promises of much higher efficiencies, better reliability and robustness and opens up for much more intelligent control of components and systems.

In general, topics of interest include, but are not limited to:

• Development and testing of topologies, components and control strategies for wind turbines, incl. advanced and intelligent pitch and yaw control
• Development of system topologies, components and control strategies for efficient power take-off for wave energy converters

Prof. Torben Ole Andersen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.