Wheel-track type wind turbine rotor blade driving reversing device and operation method thereof

Abstract

The invention relates to a wheel-track type wind turbine rotor blade driving reversing device and an operation method thereof. The wheel track type wind turbine rotor blade driving reversing device is composed of a power generation trolley, cylinder rotor blades, a driving motor, a flywheel energy storage overrun clutch, an energy storage flywheel, a driving electromagnetic clutch, two sets of reversing electromagnetic clutches and reversing gears, a spring energy storage overrun clutch, an energy storage spring, an electromagnetic brake and the like. The driving motor rotates with one-way variable speed, one path of the driving motor drives the energy storage flywheel through the flywheel energy storage overrun clutch, and the other path of the driving motor enters an input shaft of the reversing device through the driving electromagnetic clutch, then, through the selection of two sets of reversing electromagnetic clutches and reversing gears, rotor blades installed on the power generation trolley are driven in a time-sharing mode to rotate at the preset rotating direction and rotating speed; in the reversing period of the rotor blades, redundant load capacity of the motor drives the flywheel to store energy, inertia energy of free rotation of the rotor is stored by the spring, and energy is released to the rotor blades in sequence after the rotor blades are reversed, so that total mechanical energy consumed when the rotor blades need to be reversed periodically is reduced.

Description

technical field [0001] The invention relates to the field of vertical-axis wind turbines, in particular to a wheel-rail type vertical-axis wind turbine rotor blade drive reversing device based on the Magnus effect and an operating method thereof. Background technique [0002] According to the geometrical relationship between the rotation axis and the ground, wind turbines are divided into two categories: horizontal axis and vertical axis. In wind power generation technology, horizontal axis wind turbines are developing rapidly, occupying most of the domestic and foreign wind power generation markets. However, the rapid development of horizontal-axis wind turbine technology has not significantly reduced operating costs, and wind power feed-in tariffs remain high. Most wind energy companies need to rely on national energy policy subsidies to survive. In order to compete with traditional energy sources, wind turbines have chosen to develop in the direction of large-scale, and r...

AI Technical Summary

Problems solved by technology

[0005] The wind power generation device of this concept has not achieved the effect of large-scale power generation because of "its mechanical complexity": in order to make the lift generated by the cylindrical rotor continuously drive the trolley to reciprocate on the circular track, the rotating cylinder must be in the circular orbit. The direction of rotation is changed twice within one week of running on the track; in order to obtain a large lift, the diameter and rotation speed of the cylinder are required to be as large as possible, resulting in a large moment of inertia of the cylinder and a large energy consumption when changing the direction

Under the technical conditions at that time (1933), changing the rotational speed and steering of the rotor cylinder could only be achieved by means of a complex purely mechanical system, which caused excessive mechanical losses; also due to the difficulty of reversing and other basic technologies that were not yet developed Influenced by the impact, the increase of the rotational speed of the cylinder is greatly restricted, and the aerodynamic characteristics of the rotor cannot be fully utilized, resulting in the abandonment of the idea

[0006] Further analyzing the above-mentioned technical solutions, one of the core important technical issues is that in order to obtain favorable aerodynamic characteristics of the wind turbine, the cylindrical rotor needs to have a sufficiently large rotational radius and rotational speed, so the moment of inertia of the cylindrical rotor is generally The higher the speed, the greater the energy consumption when reaching the speed requirement; and even if each such "heavy" rotor obtains the ideal aerodynamic lift, it will drive the car to run through the semi-circle arc on the windward side, and then enter the leeward side. After the semicircle, in order to continue to obtain the Magnus force driving the trolley along the same circumferential direction, it is necessary to change the rotation direction of the rotor (otherwise the Magnus force generated on the leeward side will hinder the circular motion of the trolley)

That is to say, each rotor must go through two changes in the direction of rotation within a circle of the circular orbit. If the problem of rotational energy conversion is not solved well, a large amount of energy will be consumed when the rotor is started in reverse, and the energy consumed will be greater than that of the wind. The proportion of the electrical energy that the machine can generate is too large, which has a fatal impact on the practicability of the technology

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