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Journal articles on the topic 'Gearless wind turbine'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Rajasri, Kasula, Movva Naga Venkata Kiranbabu, Banda Srinivas Raja, et al. "Power quality enhancement for a grid connected wind turbine energy system with PMSG." International Journal of Applied Power Engineering (IJAPE) 14, no. 2 (2025): 392. https://doi.org/10.11591/ijape.v14.i2.pp392-400.

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This project investigates the burgeoning potential of gearless wind turbine systems as a pivotal clean energy resource. Unlike conventional gearbox-based turbines, which grapple with issues like frequent breakdowns, intricate repairs, and prolonged downtimes, gearless systems present a suite of advantages. Chief among these is heightened reliability, diminished maintenance costs, and augmented efficiency. By circumventing the need for a gearbox, gearless turbines shed weight, bolster reliability, and demand less upkeep. The incorporation of permanent magnet generators further elevates their ef

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2

Ghanem, S., G. Fandi, J. Kyncl, and Z. Müller. "A novel scheme for control by active and reactive power utilized in gearless variable speed wind turbine system with PMSG connected to the grid." Electrical Engineering & Electromechanics, no. 2 (April 18, 2022): 56–68. http://dx.doi.org/10.20998/2074-272x.2022.2.09.

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Introduction. As a result of increasing fossil fuel price and state-of-the-art technology, more and more residential and commercial consumers of electricity have been installing wind turbines. The motivation being to cut energy bills and carbon dioxide emissions. Purpose. The main goal of this work is developing a control scheme for a variable speed wind turbine generator in order to produce utmost power from varying wind types, and variable wind speed. Novelty. This research paper presents an IGBT power converter control scheme for active power in relation to wind speed and reactive power by

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3

S., Ghanem, Fandi G., Kyncl J., and Müller Z. "A novel scheme for control by active and reactive power utilized in gearless variable speed wind turbine system with PMSG connected to the grid." Electrical Engineering & Electromechanics, no. 2 (April 18, 2022): 56–68. https://doi.org/10.20998/2074-272X.2022.2.09.

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<strong><em>Introduction. </em></strong><em>As a result of increasing fossil fuel price and state-of-the-art technology, more and more residential and commercial consumers of electricity have been installing wind turbines. The motivation being to cut energy bills and carbon dioxide emissions. <strong>Purpose</strong>. The main goal of this work is developing a control scheme for a variable speed wind turbine generator</em> <em>in order to produce utmost power from varying wind types, and variable wind speed. <strong>Novelty. </strong>This research paper presents an IGB

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4

Duda, Tobias, Christoph Mülder, Georg Jacobs, Kay Hameyer, Dennis Bosse, and Martin Cardaun. "Integration of electromagnetic finite element models in a multibody simulation to evaluate vibrations in direct-drive generators." Forschung im Ingenieurwesen 85, no. 2 (2021): 257–64. http://dx.doi.org/10.1007/s10010-021-00472-z.

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AbstractThis paper introduces a novel electromechanical model for calculating electromagnetic excited structural vibrations and structure borne acoustics for gearless wind turbines. Therefore, the wind turbine model structure is explained and a drivetrain model is derived to investigate the drivetrain decoupled from the aerodynamic excitations. The drivetrain model is fed with results from an electromagnetic finite element model of the generator considering air gap width changes and the wind turbine torque and speed characteristics. Furthermore, an exemplary ramp-up of the drivetrain is simula

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5

Różowicz, Sebastian, Zbigniew Goryca, and Antoni Różowicz. "Permanent Magnet Generator for a Gearless Backyard Wind Turbine." Energies 15, no. 10 (2022): 3826. http://dx.doi.org/10.3390/en15103826.

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This paper presents the design of a permanent magnet generator for a gearless backyard wind turbine. The magnetisation characteristics of the rotor steel and the stator at different field strength ranges were considered at the design stage and mathematically described using a model in Matlab. The detailed calculations and the design of the planar model were carried out using FEMM software. The high-quality results obtained from the calculations shown in the paper made it possible to make a real model of the generator. This paper presents views of the stator package, the rotor, the entire gener

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6

Nasiri, Mojtaba, Saleh Mobayen, and Quan Min Zhu. "Super-Twisting Sliding Mode Control for Gearless PMSG-Based Wind Turbine." Complexity 2019 (April 22, 2019): 1–15. http://dx.doi.org/10.1155/2019/6141607.

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In recent years, the complexities of wind turbine control are raised while implementing grid codes in voltage sag conditions. In fact, wind turbines should stay connected to the grid and inject reactive power according to the new grid codes. Accordingly, this paper presents a new control algorithm based on super-twisting sliding mode for a gearless wind turbine by a permanent magnet synchronous generator (PMSG). The PMSG is connected to the grid via the back-to-back converter. In the proposed method, the machine side converter regulates the DC-link voltage. This strategy improves low-voltage r

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7

Dmitrievskii, V., and V. Prakht. "Gearless generator with magnets on the stator for wind turbine." Journal of Physics: Conference Series 1102 (October 2018): 012018. http://dx.doi.org/10.1088/1742-6596/1102/1/012018.

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8

Gołębiowski, Lesław, Marek Gołębiowski, Damian Mazur, and Matthias Humer. "The gearless, grid-connected, 6-phase asymmetric wind turbine generator system." Archives of Electrical Engineering 64, no. 3 (2015): 391–403. http://dx.doi.org/10.2478/aee-2015-0031.

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Abstract In this paper a system of a grid side and a generator side converters, both working with a common capacitor, is presented. The 6-phase asymmetric inset-type SMPMSM generator is used. A large pole pair number of this generator enables a gearless wind turbine operation. The fundamental and 3rd harmonic cooperation is used to increase the generator performance. This is accomplished by means of the 3rd harmonic current injection. For that reason the generator side converter must have a neutral connection.

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9

Gołębiowski, Marek. "Fast control of the six phase asymmetric generator with the 3rd harmonic current injection." Archives of Electrical Engineering 65, no. 1 (2016): 59–71. http://dx.doi.org/10.1515/aee-2016-0005.

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Abstract In this paper the MTPA, MTPF, constant torque and constant flux control trajectories are presented. These trajectories are calculated for a 6-phase asymmetric insettype SMPMSM generator with the assumption of a certain level of 3rd harmonic current injection. This injection technique increases the generator performance due to the cooperation of the fundamental and 3rd harmonic. The presented trajectories are used for fast control of the generator working in the gearless wind turbine system.

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10

Benamimour, Tariq, Amar Bentounsi, and Hind Djeghloud. "Study of Wind Turbine based Variable Reluctance Generator using Hybrid FEMM-MATLAB Modeling." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 1 (2017): 1. http://dx.doi.org/10.11591/ijece.v7i1.pp1-11.

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Based on exhaustive review of the state of the art of the electric generators fitted to Wind Energy Conversion System (WECS), this study is focused on an innovative machine that is a Variable Reluctance Generator (VRG). Indeed, its simple and rugged structure (low cost), its high torque at low speed (gearless), its fault-tolerance (lowest maintenance), allow it to be a potential candidate for a small wind power application at variable wind speed. For better accuracy, a finite element model of a studied doubly salient VRG is developed using open source software FEMM to identify the electromagne

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11

Tariq, Benamimour, and Bentounsi Amar. "Study of Wind Turbine based Variable Reluctance Generator using Hybrid FEMM-MATLAB Modeling." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 1 (2017): 1–11. https://doi.org/10.11591/ijece.v7i1.pp1-11.

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Based on exhaustive review of the state of the art of the electric generators fitted to Wind Energy Conversion System (WECS), this study is focused on an innovative machine that is a Variable Reluctance Generator (VRG). Indeed, its simple and rugged structure (low cost), its high torque at low speed (gearless), its fault-tolerance (lowest maintenance), allow it to be a potential candidate for a small wind power application at variable wind speed. For better accuracy, a finite element model of a studied doubly salient VRG is developed using open source software FEMM to identify the electromagne

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12

Kim, Seul-Ki, and Eung-Sang Kim. "PSCAD/EMTDC-Based Modeling and Analysis of a Gearless Variable Speed Wind Turbine." IEEE Transactions on Energy Conversion 22, no. 2 (2007): 421–30. http://dx.doi.org/10.1109/tec.2005.858063.

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13

Conroy, James, and Rick Watson. "Torsional Damping Control of Gearless Full-Converter Large Wind Turbine Generators with Permanent Magnet Synchronous Machines." Wind Engineering 31, no. 5 (2007): 325–40. http://dx.doi.org/10.1260/030952407783418757.

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This study examines the torsional damping requirements for megawatt scale wind turbines having synchronous generators with full-wave ac/dc/ac inversion technology. The particular type has a low-speed permanent magnet synchronous generator with gearless drive train and a full power-frequency converter. The electrical connection via the full converter provides no torsional damping to reduce speed oscillations. With a large number of poles, this means that torsional oscillations in the mechanical drive train can be easily excited. The analysis investigates how control algorithms for the converter

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14

Haque, Md Enamul, Y. C. Saw, and Mujaddid Morshed Chowdhury. "Advanced Control Scheme for an IPM Synchronous Generator-Based Gearless Variable Speed Wind Turbine." IEEE Transactions on Sustainable Energy 5, no. 2 (2014): 354–62. http://dx.doi.org/10.1109/tste.2013.2285551.

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15

Prakht, Vladimir, Vladimir Dmitrievskii, Vadim Kazakbaev, and Ekaterina Andriushchenko. "Comparison of Flux-Switching and Interior Permanent Magnet Synchronous Generators for Direct-Driven Wind Applications Based on Nelder–Mead Optimal Designing." Mathematics 9, no. 7 (2021): 732. http://dx.doi.org/10.3390/math9070732.

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The permanent magnet flux-switching machine (PMFSM) is one of the most promising machines with magnets inserted into the stator. To determine in which applications the use of PMFSM is promising, it is essential to compare the PMFSM with machines of other types. This study provides a theoretical comparison of the PMFSM with a conventional interior permanent magnet synchronous machine (IPMSM) in the gearless generator of a low-power wind turbine (332 rpm, 51.4 Nm). To provide a fair comparison, both machines are optimized using the Nelder–Mead algorithm. The minimized optimization objectives are

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16

Gajewski, Piotr, and Krzysztof Pieńkowski. "Control of the Hybrid Renewable Energy System with Wind Turbine, Photovoltaic Panels and Battery Energy Storage." Energies 14, no. 6 (2021): 1595. http://dx.doi.org/10.3390/en14061595.

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The aim of the paper is the study of the Hybrid Renewable Energy System, which is consisted of two types of renewable energy systems (wind and sun) and is combined with storage energy system (battery). The paper presents the classification and review of architectures of Hybrid Renewable Energy Systems. The considered Hybrid Renewable Energy System was designed as a multi-converter system with gearless Wind Turbine driven Permanent Magnet Synchronous Generator and with a Photovoltaic Array and Battery Energy System. The mathematical models of individual elements of a complex Hybrid Renewable En

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17

Augusto, G. L., W. H. Chen, and L. A. Gan Lim. "Evaluation of LM 43.8P blade performance at different hub height wind speeds using blade element momentum theory." IOP Conference Series: Earth and Environmental Science 1372, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1372/1/012004.

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Abstract An investigation was conducted on a three-bladed rotor similar to AVANTIS AV908. The rotor blade is appropriate for a Class I wind turbine generator and consists of three LM 43.8P blades. The 2.5 MW gearless wind turbine generator has a rated rotational speed of 16 rpm. An analysis of the LM 43.8P blade’s aerodynamics was carried out using the Blade Element Momentum (BEM) Theory to assess the turbine’s performance at different hub height wind speeds. The study employed three BEM models, including the original BEM concept without correction factors, the BEM Theory by DNV/Ris0, and the

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18

Zheng, Jingyang, Jinchen Ji, Shan Yin, and Van-Canh Tong. "Internal loads and contact pressure distributions on the main shaft bearing in a modern gearless wind turbine." Tribology International 141 (January 2020): 105960. http://dx.doi.org/10.1016/j.triboint.2019.105960.

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19

Trevisan, Aramis Schwanka, Amgad A. El-Deib, Richard Gagnon, Jean Mahseredjian, and Martin Fecteau. "Field Validated Generic EMT-Type Model of a Full Converter Wind Turbine Based on a Gearless Externally Excited Synchronous Generator." IEEE Transactions on Power Delivery 33, no. 5 (2018): 2284–93. http://dx.doi.org/10.1109/tpwrd.2018.2850848.

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20

MICHIOKA, Hidekazu, Hiroshi FUNABASHI, and Kazuichi SEKI. "A104 Application of Yaw axis mechanism of R guide and gearless mechanism using Yaw control system for the wind turbine generator system." Proceedings of the National Symposium on Power and Energy Systems 2009.14 (2009): 11–12. http://dx.doi.org/10.1299/jsmepes.2009.14.11.

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21

Sundaram, N. Kalyana, Titus Richard, M. B. Chaudhari, et al. "Optimization of Gearless Wind Power Conversion Systems: Reducing Mechanical Losses and Improving Reliability." E3S Web of Conferences 591 (2024): 02001. http://dx.doi.org/10.1051/e3sconf/202459102001.

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This research focuses on optimizing gearless wind power conversion systems to reduce mechanical losses and increase overall reliability. Gearless systems offer substantial advantages over standard geared turbines, such as fewer maintenance requirements and higher efficiency. However, mechanical losses and reliability concerns still represent significant impediments to their wider deployment. This work analyzes sophisticated optimization techniques and design improvements aimed at lowering mechanical losses in essential components. Additionally, it studies strategies to boost system stability,

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22

Morgan, Ernest F., Tamer F. Megahed, Junya Suehiro, and Sobhy M. Abdelkader. "A Fault Ride-Through Technique for PMSG wind turbines using Superconducting Magnetic Energy Storage (SMES) under Grid voltage sag conditions." Renewable Energy and Power Quality Journal 20 (September 2022): 79–83. http://dx.doi.org/10.24084/repqj20.223.

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Wind power penetration is growing, posing considerable technological challenges for developing electrical grid systems. Gearless permanent magnet synchronous generator (PMSG) wind energy conversion systems (WECS) are becoming more popular. On the flip side, they are susceptible to grid failures. The use of Superconducting Magnetic Energy Storage (SMES) to enhance fault ride-through in PMSG wind turbines is investigated. Per the current Grid code trends, WECS are not to be disconnected from the grid; rather, they should provide reactive power support during such situations. This work incorporat

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23

Prakht, Vladimir, Vladimir Dmitrievskii, Vadim Kazakbaev, and Mohamed N. Ibrahim. "Comparison between rare-earth and ferrite permanent magnet flux-switching generators for gearless wind turbines." Energy Reports 6 (December 2020): 1365–69. http://dx.doi.org/10.1016/j.egyr.2020.11.020.

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24

Wittmann, F., C. Schmitt, F. Adam, and P. Dierken. "Evaluation of the energy demands for a floating O&M-hub." Journal of Ocean Engineering and Marine Energy 7, no. 2 (2021): 211–27. http://dx.doi.org/10.1007/s40722-021-00191-1.

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AbstractThe Energyhub@Sea concept is one of the four research applications of the Space@Sea project funded by the EU’s Horizon 2020 research program (GA number: 774253). The focus of this paper is the evaluation of the energy demands of an energy self-sufficient maintenance platform at the location of Helgoland in the North Sea. In view of this, a standardized modular floater was developed as an offshore wind operation and maintenance base, which in the following paper is referred to as an O&M hub. The O&M hub is intended to be equipped with accommodation facilities and various renewab

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25

Kasula, Rajasri, Naga Venkata Kiranbabu Movva, Srinivas Raja Banda, et al. "Power quality enhancement for a grid connected wind turbine energy system with PMSG." International Journal of Applied Power Engineering (IJAPE) 14, no. 2 (2025). https://doi.org/10.11591/ijape.v14.i2.pp392-400.

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This project investigates the burgeoning potential of gearless wind turbine systems as a pivotal clean energy resource. Unlike conventional gearbox based turbines, which grapple with issues like frequent breakdowns, intricate repairs, and prolonged downtimes, gearless systems present a suite of advantages. Chief among these is heightened reliability, diminished maintenance costs, and augmented efficiency. By circumventing the need for a gearbox, gearless turbines shed weight, bolster reliability, and demand less upkeep. The incorporation of permanent magnet generators further elevate

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26

Yusuf, Yasa, and Mese Erkan. "Thermal Assessment of Outer Rotor Direct Drive Gearless Small-Scale Wind Turbines." August 1, 2015. https://doi.org/10.5281/zenodo.1108889.

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This paper investigates the thermal issue of permanent magnet synchronous generator which is frequently used in direct drive gearless small-scale wind turbine applications. Permanent Magnet Synchronous Generator (PMSG) is designed with 2.5 kW continuous and 6 kW peak power. Then considering generator geometry, mechanical design of wind turbine is performed. Thermal analysis and optimization is carried out considering all wind turbine components to reach realistic results. This issue is extremely important in research and development (R&D) process for wind turbine applications.

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27

Abdelkader, Sobhy M., Ernest F. Morgan, Tamer F. Megahed, Wesam Rohouma, and Omar Abdel-Rahim. "A model predictive control strategy for enhancing fault ride through in PMSG wind turbines using SMES and improved GSC control." Frontiers in Energy Research 11 (October 25, 2023). http://dx.doi.org/10.3389/fenrg.2023.1277954.

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Wind energy has emerged as a prominent player in the realm of renewable energy sources, both in terms of capacity and technological adaptability. Among the various renewable energy technologies, wind turbine generators stand out as the most widely employed. Recently, gearless permanent magnet synchronous generators have gained traction in the wind energy sector due to their appealing features, such as reduced maintenance costs and the elimination of gearboxes. Nevertheless, challenges remain, particularly concerning the grid-friendly integration of wind turbines, specifically with regard to hi

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28

Zhang, Peng, Zhiyuan Jiang, Xianzhen Huang, Yuping Wang, and Zhiming Rong. "Thermal error prediction and reliability analysis of the main shaft bearing at wind turbines." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, June 20, 2024. http://dx.doi.org/10.1177/09544062241256500.

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During the operation of the gearless wind turbine, the phenomenon of heat generation in the main shaft bearing is inevitable and further affects the assembly preload. It is crucial to determine the effect of the thermal error on bearing assembly preload. In this paper, a reliability analysis method for main shaft bearing is proposed. Firstly, a finite element model for the thermal analysis of wind turbines is established based on heat transfer theory, and the thermal error of the preload is calculated. Subsequently, a reliability analysis of the main shaft bearing is conducted through Quasi-Mo

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29

Abdeljalil, Dorra, Mohamed Chaieb, Naourez Benhadj, Manel Krichen, and Rafik Neji. "Design and optimization of permanent magnet synchronous generator dedicated to direct-drive, high power wind turbine." Wind Engineering, October 20, 2021, 0309524X2110463. http://dx.doi.org/10.1177/0309524x211046379.

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This paper presents analysis, design, and optimization of a high-power permanent-magnet synchronous generator (PMSG). This generator is introduced in a large-scale wind turbine which can be used in a big wind farm. This generator is used in gearless configuration. The work focuses on the geometric sizing and the finite element analysis (FEA) of the PMSG. FEA is a good choice for analyzing problems over complicated domains. The flux, the electromotive force, the cogging torque, and the torque are calculated using analytical equations. Then, these parameters are obtained using finite element met

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30

Ashrafzadeh, Seyed Ataollah, Ali Asghar Ghadimi, Ali Jabbari, and Mohammad Reza Miveh. "Optimal design of a modular axial‐flux permanent‐magnet synchronous generator for gearless wind turbine applications." Wind Energy, December 15, 2023. http://dx.doi.org/10.1002/we.2887.

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AbstractAir‐cored axial‐flux permanent‐magnet synchronous generators (AFPMSGs) are potential candidates for gearless direct‐coupled wind turbines (DCWTs) owing to providing high efficiency and power density. The design of a DCWT generator is so complicated since the generator cost, dimension, and weight affected by gear elimination. Therefore, it is essential to find an optimal AFPMSG design at rated conditions. In this paper, an accurate procedure for the optimal design of an air‐cored AFPMSG applicable for DCWTs is proposed. The genetic algorithm (GA) is used for multi‐objective design optim

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31

Sineglazov, V. M., V. V. Kozyrskyy, and M. I. Trehub. "Justification of aerodynamic efficiency increase methods in gearless horizontal-axis wind turbines." Electronics and Control Systems 1, no. 35 (2013). http://dx.doi.org/10.18372/1990-5548.35.5778.

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32

Rückert, Frank Ulrich, Burhan Ibrar, Arslan Ahmed, et al. "Fluid Flow and Heat Transfer of a Novel Passive Cooling System for Gearless Wind Turbines with a Power Range of 3 to 12 MW." Energy, October 2024, 133478. http://dx.doi.org/10.1016/j.energy.2024.133478.

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