This article provides the Arduino source code and usage instructions for the Magnus effect vertical axis wind turbine experimental device. Combined with the previously disclosed circuit diagram, mechanical parts list, and 3D printing STL file, this interesting experiment can be easily implemented. Anyone who is interested can download it and enjoy it ! The dynamic demonstration of this experimental device is shown in the following video:
Wind Energy & Wind Turbine
Wind Energy & wind turbine
Darrieus wind turbine 3D printing files released, you can also build one yourself
This article provides 3D printing .STL files, documentation and pictures of the Darrieus wind turbine experimental device, etc. Those who are interested can download it and actually make it to play with! The Darrieus wind turbine is a lift-type vertical axis wind turbine with high rotation speed and high efficiency. It is a subject worth studying. The experimental equipment of this project is shown in the video below :
Magnus Effect Vertical Axis Wind Turbine project files released, you can also build one yourself
This article provides the project files of the Magnus effect vertical axis wind turbine experimental device, including 3D printed (STL) files, mechanical parts list, circuit diagram, etc. Anyone who is interested in making one can download it and try it out ! The device of this project is shown in the video :
Wind Power Calculators for various wind turbines-HAWT/VAWT
How much electricity can a wind turbine generate? This article provides a wind energy calculator that can quickly calculate the output power of a wind turbine. First select the type of turbine, including the common horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT), enter its size and wind speed, and then set the relevant efficiency to calculate the power generation. The solidity of the turbine is also calculated according to the chord length of the blade, which is a key factor affecting the efficiency, for users to evaluate.
A method of enhancing the Magnus effect by using blades instead of end plates
The Magnus effect is an efficient way to generate lift, which can be used in wind turbines, ship propulsion and aircraft. The traditional method of enhancing the Magnus effect is to add end plates to one or both ends of a cylindrical rotor, known as a Flettner rotor. This article proposes a new method(patented) to enhance the Magnus effect by replacing the end plates with a plurality of blades, which are briefly described as follows:
Magnus Effect Vertical Axis Wind Turbine Realistic Demonstration
Since the Magnus effect was described in 1852, it is natural to try to drive wind turbines with it. As for the horizontal axis wind turbine, its structure is not difficult to understand as shown in the figure below. However, if it is implemented as a vertical axis wind turbine, the rotation directions of the cylindrical rotor on the windward side and the leeward side must be opposite, so that the torques will not cancel each other out, so as to drive the wind turbine. In the early days, it could only be made by means of gears and connecting rods, which was difficult to achieve because the structure was too bulky. In recent years, thanks to the rapid advancement of semiconductor technology, microcontroller and motor drive technology has matured, it is no longer difficult to realize this concept. The following video shows this original concept in the real world …
Magnus Effect and Vertical Axis Wind Turbine (VAWT)
Calculation of wind energy and wind turbine efficiency
The function of the wind turbine is to extract energy from the wind. The wind is flowing air, which has speed and therefore kinetic energy. When the wind flows through the wind turbine blades, part of the kinetic energy is transferred to the wind turbine to make it rotate. The wind turbine gains energy, and the wind loses energy, so the wind speed after flowing through the wind turbine will slow down. This article explains the calculation methods of wind energy and wind turbine power and efficiency, and provides a video to make it easier to understand.
Comparison of the efficiency of various wind turbines – horizontal/vertical axis
This article introduces the efficiency comparison of various wind turbines, including common vertical axis wind turbines(Savonius and Darrieus) and typical three-blade horizontal axis wind turbines. Among them, the Savonius turbine is a drag type wind turbines, and the Darrieus wind turbine and the three-blade horizontal axis wind turbine are both lift-type. The efficiency comparison chart of various wind turbines and related videos are shown below. If you want to understand what the Savonius and the Darrieus wind turbines are, please refer to => Basic principles and types of Vertical Axis Wind Turbines.
High-efficiency but difficult to self-start Darrieus wind turbine experiment – VAWT (2)
According to the literature, the Darrieus vertical axis wind turbine characterized by high efficiency but it is difficult to be self-starting. I couldn’t understand when I first came into contact with it. Since high efficiency means that it has torque, why can’t it start by itself? Later I realized that its efficiency must appear at a higher speed (similar to the high gear of a car), As for how high the speed should be? Usually 2~6 times faster than wind speed. This puzzles me even more, because the wind turbine is driven by the wind, why can it revolve faster than the wind speed? It seems that an experiment must be done, seeing is believing …