Alhrshy, L., Jauch, C., & Kloft, P. (2020). Development of a Flexible Lightweight Hydraulic-Pneumatic Flywheel System for Wind Turbine Rotors. Fluids, 5. http://doi.org/10.3390/fluids5040162
Abstract
In this paper, the design of a flexible piston accumulator for application in a hydraulic-pneumatic flywheel system in a wind turbine rotor is presented. The flywheel system enables a wind turbine to vary the inertia of its rotor blades to control the power output and, most importantly, to influence the vibratory behaviour of wind turbine components. The method used for designing the flexible accumulator is based on the one hand on test results of a flexible piston accumulator prototype, and on the other hand, on simulation results of a model of a flexible piston accumulator. As a result, a design of flexible piston accumulators for application in the flywheel system is implemented and compared with the design of conventional steel accumulators. Due to the proposed design of the flywheel system, the impact on the mechanical loads of a wind turbine is analysed. The simulation results show that the new design of the piston accumulators causes a lower impact on the mechanical loads of the wind turbine than a previously published design of piston accumulators. It is further shown that the considered wind turbine can take on the flywheel system without the need for reinforcements in the rotor blades.
Jauch, C., Rohr, A., Gloe, A., Thiemke, M., & Wilhelm, J. E. (2019). Ein Windenergieanlagenemulator zum Test von Leistungseinspeisung im Netz. Ingenieurspiegel , 4, 4. (Original work published November 2019)
Jauch, C., Alhrshy, L., & Kloft, P. (2019). Flexible hydropneumatische Kolbenspeicher aus kohlefaserverstärktem Kunststoff zum Einsatz in Rotorblätter von Windenergieanlagen. Ingenieurspiegel , 4, 3. (Original work published November 2019)
Gloe, A., Jauch, C., & Räther, T. (2019). Störfall im Flensburger Stromnetz – wie Windenergieanlagen den Blackout möglicherweise hätten verhindern können. Ingenieurspiegel , 4, 3. (Original work published November 2019)
Jauch, C., & Rohr, A. (2019). Large Scale Test Bench for Emulating Grid Connected Wind Turbines of Different Sizes. IEEE CPE-POWERENG 2019, 13th International Conference on Compatibility, Power Electronics and Power Engineering. (Original work published April 2019)
Thiesen, H., & Jauch, C. (2019). Identifying electromagnetic illusions in grid frequency measurements for synthetic inertia provision. IEEE CPE-POWERENG 2019, 13th International Conference on Compatibility, Power Electronics and Power Engineering. (Original work published April 2019)
Jauch, C., Reichstein, T., Schaffarczyk, A. P., Dollinger, C., Balaresque, N., Schülein, E., & Fischer, A. (2019). Investigation of Laminar–Turbulent Transition on a Rotating Wind-Turbine Blade of MultimegawattClass with Thermography and Microphone Array . Energies, 12. http://doi.org/10.3390/en12112102