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Structural Optimisation of Offshore Direct-Drive Wind Turbine Generators Including Static and Dynamic Analyses (2021)
Journal Article
Tartt, K., Kazemi Amiri, A., McDonald, A., & Jaen-Sola, P. (2021). Structural Optimisation of Offshore Direct-Drive Wind Turbine Generators Including Static and Dynamic Analyses. Journal of Physics: Conference Series, 2018(1), Article 012040. https://doi.org/10.1088/1742-6596/2018/1/012040

One way to achieve increased wind capacity is by installing larger and more efficient wind turbines, which results in larger/heavier generators. Direct-drive, permanent magnet generators are favoured due to their increased efficiency, but the added w... Read More about Structural Optimisation of Offshore Direct-Drive Wind Turbine Generators Including Static and Dynamic Analyses.

Parametric lightweight design of a direct-drive wind turbine electrical generator supporting structure for minimizing dynamic response (2021)
Journal Article
Jaen Sola, P., Oterkusb, E., & McDonald, A. (2021). Parametric lightweight design of a direct-drive wind turbine electrical generator supporting structure for minimizing dynamic response. Ships and Offshore Structures, 16(Sup 1: Papers from the 2020 International Conference on Ships and Offshore Structures), 266-274. https://doi.org/10.1080/17445302.2021.1927356

Heavy, large and robust supporting structures are needed to keep the airgap clearance of direct-drive multi-MW wind turbine electrical generators open and stable. As rotating pieces of machinery, generators vibrate when their natural frequencies are... Read More about Parametric lightweight design of a direct-drive wind turbine electrical generator supporting structure for minimizing dynamic response.

Lightweight design of direct-drive wind turbine electrical generators: A comparison between steel and composite material structures (2019)
Journal Article
Jaen Sola, P., McDonald, A., & Oterkus, E. (2019). Lightweight design of direct-drive wind turbine electrical generators: A comparison between steel and composite material structures. Ocean Engineering, 181, 330-341. https://doi.org/10.1016/j.oceaneng.2019.03.053

Direct-drive generators for wind turbines are high torque, low speed machines which require a heavy robust structure to maintain the air-gap clearance open and stable. The mass of the structural material can be assessed at the early stages of the des... Read More about Lightweight design of direct-drive wind turbine electrical generators: A comparison between steel and composite material structures.

Dynamic structural design of offshore direct-drive wind turbine electrical generators. (2018)
Journal Article
Jaen-Sola, P., McDonald, A. S., & Oterkus, E. (2018). Dynamic structural design of offshore direct-drive wind turbine electrical generators. Ocean Engineering, 161, 1-19. https://doi.org/10.1016/j.oceaneng.2018.04.074

Direct-drive permanent magnet generators for multi-MW wind turbines are low speed high torque electrical machines requiring large, heavy and robust structures to maintain the airgap clearance open and stable. The structural mass of radial-flux genera... Read More about Dynamic structural design of offshore direct-drive wind turbine electrical generators..

Equivalent Electrical Circuit Derivation of a 7MW Offshore Wind Turbine Gearbox
Presentation / Conference Contribution
Jaen-Sola, P., & Mcdonald, A. S. Equivalent Electrical Circuit Derivation of a 7MW Offshore Wind Turbine Gearbox. Paper presented at The 7th International Conference on Renewable Power Generation (RPG 2018), Copenhagen, Denmark

A thermal model of the main mechanical components of the Levenmouth Development Turbine powertrain has been developed in Matlab/Simulink in order to predict their efficiency curve as a function of torque and speed and their electrical analogues of cu... Read More about Equivalent Electrical Circuit Derivation of a 7MW Offshore Wind Turbine Gearbox.

Design of direct-drive wind turbine electrical generator structures using topology optimization techniques
Presentation / Conference Contribution
Jaen-Sola, P., McDonald, A. S., & Oterkus, E. (2020, September). Design of direct-drive wind turbine electrical generator structures using topology optimization techniques. Presented at The Science of Making Torque from Wind (TORQUE 2020), Online

Reducing the structural mass of low speed multi-MW electrical machines for renewable energy purposes have become an important object of study as with the drop in mass a substantial decrease in the machine capital cost can be achieved. Direct-drive wi... Read More about Design of direct-drive wind turbine electrical generator structures using topology optimization techniques.

A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components
Presentation / Conference Contribution
Jaen-Sola, P., & Mcdonald, A. (2016, April). A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components. Presented at 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), Glasgow, UK

Direct-drive generators are low speed electrical machines requiring robust and large supporting structures designed to resist the significant loads present during assembly and operation. Generator structures have to be stiff, especially in the radial... Read More about A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components.

A Lightweight Approach for Airborne Wind Turbine Drivetrains
Presentation / Conference Contribution
Jaen Sola, P., Mcdonald, A. S., & Oterkus, E. (2015, November). A Lightweight Approach for Airborne Wind Turbine Drivetrains. Presented at European Wind Energy Association, EWEA 2015

Buoyant airborne wind turbines are devices capable of harnessing stronger winds at higher altitudes and with their automated and rapidly deployable system they are suited to niche applications such as emergency power generation. Although much of the... Read More about A Lightweight Approach for Airborne Wind Turbine Drivetrains.

Structural Analysis and Characterization of Radial Flux PM Generators for Direct-Drive Wind Turbines
Presentation / Conference Contribution
Jaen-Sola, P., & McDonald, A. S. (2014, September). Structural Analysis and Characterization of Radial Flux PM Generators for Direct-Drive Wind Turbines. Presented at 3rd Renewable Power Generation Conference (RPG 2014), Naples, Italy

Wind turbine direct-drive generator structures are analysed in order to optimise and reduce mass. A method for modelling key stiffness parameters including a magnetic air-gap stiffness is outlined. Different approaches are used to parametrically calc... Read More about Structural Analysis and Characterization of Radial Flux PM Generators for Direct-Drive Wind Turbines.

Adaptive Dynamic Control of a Wind Generator
Presentation / Conference Contribution
Jaen-Sola, P., Anaya-Lara, O., & Dominguez-Navarro, J. A. (2013, September). Adaptive Dynamic Control of a Wind Generator. Presented at 9th EAWE PhD seminar in Wind Energy in Europe, Uppsala University Campus Gotland, Sweden

The main aim of the present project is to obtain a better understanding of the dynamic control of a wind turbine. To accomplish this, an adaptive dynamic controller was developed and connected to a wind DFIG Simulink model. In order to demonstrate th... Read More about Adaptive Dynamic Control of a Wind Generator.