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Optimal Control of Wind and Wave Energy Converters

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A3: Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: 3 October 2024 | Viewed by 1026

Special Issue Editors


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Guest Editor
Department of Engineering Science, Babeș-Bolyai University, 400347 Cluj Napoca, Romania
Interests: renewable energy; energy policy; energy conversion
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Guest Editor
Engineering Faculty of Hunedoara, Politehnica University Timisoara, 300006 Timișoara, Romania
Interests: automation; process control

Special Issue Information

Dear Colleagues,

Nowadays, it is difficult to imagine a society where, in the energy mix, the electricity produced from renewable sources will not experience a significant increase. In this area, the capture and transformation of air (wind) and sea (wave) current energy is the most efficient method, as it reduces the footprint on the ground, has minimal negative effects in the construction phase, and has an overall positive environmental impact.

Regarding wind exploitation, this trend can be traced for onshore as well as offshore wind energy production.

Independent of energy source, wind, or wave, the first condition is to identify a location with the right potential, followed by different site assessments, technical planning, and a huge weight of bureaucratic approval and the authorization process. The offshore area has become one of the leading renewable energy areas, driving change in energy production.

Once the wind and wave turbines operate, it is a big challenge to ensure the operation of the turbines according to the wind power or wave characteristics. Therefore, ensuring operation at the maximum power point (MPP) represents a continuing challenge.

The location with the best wind or wave location is unusable for exploiting this potential if the network grid capacity is not given. A continuous challenge is given to maintain constant grid improvement and intelligent network control that can facilitate better power distribution in the network.

The Guest Editors of this special Issue, Optimal Control of Wind and Wave Energy Converters, invite you to present and disseminate the most recent advances related to the theory, design, modelling, application, control, and condition monitoring of all types of wind or wave turbines to increase their efficiency.

Dr. Cristian Paul Chioncel
Dr. Gelu Ovidiu Tirian
Guest Editors

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. Energies 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 2600 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.

Keywords

  • operation at maximum power point (MPP)
  • electric generators
  • wave energy converters
  • transmission and distribution grid
  • smart grid
  • wind measurement techniques
  • onshore and offshore wind turbines
  • operational monitoring
  • error diagnosis of wind turbine parts

Published Papers (1 paper)

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Research

15 pages, 8490 KiB  
Article
Optimal Control of Brushless Doubly Fed Wind Power Generator under Zero-Voltage Ride-Through
by Junyang Xu and Pengcheng Nie
Energies 2024, 17(1), 235; https://doi.org/10.3390/en17010235 - 1 Jan 2024
Cited by 1 | Viewed by 715
Abstract
In the grid-connected operation dynamics of brushless doubly fed generators (BDFGs), a dip in the grid voltage is equivalent to suddenly adding a reverse voltage source at the parallel node. By deriving the expressions of the transient current of power winding (PW), control [...] Read more.
In the grid-connected operation dynamics of brushless doubly fed generators (BDFGs), a dip in the grid voltage is equivalent to suddenly adding a reverse voltage source at the parallel node. By deriving the expressions of the transient current of power winding (PW), control winding (CW), and rotor winding (RW) of a BDFG in the complex frequency domain under a natural state, it was concluded that the overshoot and oscillation time are affected by the CW voltage, the drop degree and phase of the grid voltage, and the rotor speed. Therefore, an optimal control strategy is proposed. A state model with the CW current as the state variable was constructed using the Pontryagin minimum principle. The finite-time integral value of the square of the electromagnetic torque was set as the objective function to achieve the minimum value that could suppress the overshoot and oscillation of the electromagnetic torque, and the optimal CW voltage command value was directly solved to accelerate the convergence of the BDFG’s physical quantities, thereby reducing the amplitude. Finally, the feasibility of the optimal control algorithm was verified using tests on an experimental platform. Full article
(This article belongs to the Special Issue Optimal Control of Wind and Wave Energy Converters)
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