Performance Improvement of Straight Wings Vertical-Axis Wind Turbines with Pitch Angle

2004 ◽  
Vol 2004.2 (0) ◽  
pp. 145-146
Author(s):  
Akisato MIZUNO ◽  
Akiyoshi IIDA ◽  
Keiko FUKUDOME
Keyword(s):  
Performance Improvement ◽  
Wind Turbines ◽  
Pitch Angle ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

Investigation of V-shaped blade for the performance improvement of vertical axis wind turbines

2020 ◽  
Vol 260 ◽  
pp. 114326 ◽  
Author(s):  
Jie Su ◽  
Yaoran Chen ◽  
Zhaolong Han ◽  
Dai Zhou ◽  
Yan Bao ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

Investigation of fundamental mechanism leading to the performance improvement of vertical axis wind turbines by deflector

2021 ◽  
Vol 247 ◽  
pp. 114680
Author(s):  
Peidong Zhao ◽  
Yichen Jiang ◽  
Shijie Liu ◽  
Thorsten Stoesser ◽  
Li Zou ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines ◽  
Fundamental Mechanism

Rationality research of the adjustment law for the blade pitch angle of H-type vertical-axis wind turbines

2020 ◽  
Author(s):  
Lijun Zhang ◽  
Jiawei Gu ◽  
Huaibao Zhu ◽  
Kuoliang Hu ◽  
Xiang Li ◽  
...  
Keyword(s):  
Wind Turbines ◽  
Pitch Angle ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines ◽  
Blade Pitch Angle

A novel real-time feedback pitch angle control system for vertical-axis wind turbines

2019 ◽  
Vol 195 ◽  
pp. 104023
Author(s):  
Linjun Chen ◽  
Yuzhuo Yang ◽  
Ye Gao ◽  
Zheming Gao ◽  
Yonghui Guo ◽  
...  
Keyword(s):  
Control System ◽  
Real Time ◽  
Wind Turbines ◽  
Pitch Angle ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

Wind-capture-accelerate device for performance improvement of vertical-axis wind turbines: External diffuser system

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 122196
Author(s):  
Limin Kuang ◽  
Jie Su ◽  
Yaoran Chen ◽  
Zhaolong Han ◽  
Dai Zhou ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

Aerodynamic optimization of the configuration of a pair of vertical axis wind turbines

2021 ◽  
Vol 238 ◽  
pp. 114069
Author(s):  
Mahsa Hassanpour ◽  
Leila N. Azadani
Keyword(s):  
Wind Turbines ◽  
Vertical Axis ◽  
Aerodynamic Optimization ◽  
Vertical Axis Wind Turbines

scholarly journals Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2286
Author(s):  
Yutaka Hara ◽  
Yoshifumi Jodai ◽  
Tomoyuki Okinaga ◽  
Masaru Furukawa
Keyword(s):  
Wind Turbines ◽  
Power Distribution ◽  
Phase Synchronization ◽  
Average Power ◽  
Vertical Axis ◽  
Turbine Rotor ◽  
Mean Power ◽  
Vertical Axis Wind Turbines ◽  
Fluid Body ◽  
First Time

To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis of dynamic fluid body interaction is performed via computational fluid dynamics for a rotor pair in various configurations. The rotational speed of each turbine rotor (diameter: D = 50 mm) varies based on the equation of motion. First, the dependence of rotor performance on the gap distance (gap) between two rotors is investigated. For parallel layouts, counter-down (CD) layouts with blades moving downwind in the gap region yield a higher mean power than counter-up (CU) layouts with blades moving upwind in the gap region. CD layouts with gap/D = 0.5–1.0 yield a maximum average power that is 23% higher than that of an isolated single rotor. Assuming isotropic bidirectional wind speed, co-rotating (CO) layouts with the same rotational direction are superior to the combination of CD and CU layouts regardless of the gap distance. For tandem layouts, the inverse-rotation (IR) configuration shows an earlier wake recovery than the CO configuration. For 16-wind-direction layouts, both the IR and CO configurations indicate similar power distribution at gap/D = 2.0. For the first time, this study demonstrates the phase synchronization of two rotors via numerical simulation.

Tandem-disk theory - With particular reference to vertical axis wind turbines

1981 ◽  
Vol 5 (4) ◽  
pp. 251-254 ◽  
Author(s):  
J.V. Healey
Keyword(s):  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines
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