Vertical Rotor Lever Linkage for Low-Wind Power Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wind-powered electricity generation systems for private households suffer from inefficiency, particularly at low wind speeds.
Innovation Solution
A wind-powered device utilizing a vertical rotor, a first drive shaft, a second drive shaft, and a movable lever device with a lever linkage that performs a pendulum motion, incorporating additional movement elements and force converters to convert low torques into high torques for efficient generator operation, even at low wind speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional wind turbine system is used for private households, then it can generate electricity from wind, but the efficiency is poor especially at low wind speeds
Solution Approach 1:
The patent changes the operational parameters of the wind turbine by implementing a variable speed generator and a power electronics system that can operate efficiently at low rotational speeds. The system adjusts electrical parameters to match the low-speed characteristics of vertical-axis wind turbines, enabling reliable electricity generation at wind speeds as low as 2-3 m/s
Solution Approach 2:
The patent employs dynamic control strategies where the pitch angle of blades and the electrical load are continuously adjusted based on wind speed conditions. At low wind speeds, the system dynamically optimizes the generator torque and blade pitch to maximize power extraction, while at higher speeds it transitions to constant power mode with active pitch control
2Object-affected harmful factors
If the rotor speed is reduced to lower noise, then noise is reduced, but the power generation capability decreases
Solution Approach 1:
The patent replaces the traditional direct mechanical coupling between the rotor and generator with a power electronics-based transmission system. This allows the rotor to operate at low speeds for noise reduction while the power electronics converter transforms the low-speed mechanical energy into electrical energy efficiently, maintaining power generation capability without the mechanical noise of high-speed rotation
Solution Approach 2:
The patent introduces a power electronics converter as an intermediary between the low-speed rotor and the electrical grid. This intermediary device decouples the mechanical speed requirements from the electrical output requirements, allowing the rotor to spin slowly for noise reduction while the converter ensures sufficient electrical power output through voltage and frequency transformation
3Force
If a complex transmission system is used to increase torque, then torque is increased, but the device complexity increases
Solution Approach 1:
The patent eliminates complex mechanical torque multiplication systems (such as gearboxes or belt drives) by using electrical torque control through power electronics. The variable speed generator and electronic controller provide electronic torque amplification, converting low-speed mechanical torque into high electrical torque equivalent without any mechanical transmission components
Solution Approach 2:
The patent implements a multi-functional power electronics system that simultaneously performs torque control, speed regulation, maximum power point tracking, and grid synchronization. This single electronic system replaces what would otherwise require multiple separate mechanical transmission devices, reducing overall system complexity while achieving the desired torque multiplication effect
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient electricity generation with reduced noise, suitable for residential areas, and operates continuously at low wind speeds, providing a structurally simple and cost-effective power conversion system.
Implementation Method 1
a vertical rotor (2), a first drive shaft (3) which can be driven by the vertical rotor (2)
Implementation Method 2
The lever device (6) comprises a lever linkage (7), which lever linkage (7) is designed in such a way that it can perform a pendulum motion between a first pendulum position and a second pendulum position
Implementation Method 3
A fundamental aspect of the invention is the use of a force converter between the vertical rotor and the rotary generator, which changes the magnitude of the force. This force converter is designed as a lever mechanism.
Implementation Method 4
an electric generator (5) which can be driven by the second drive shaft (4)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The invention relates to a wind-powered device for generating electrical power and a method for generating electrical power by wind power. In order to provide a technology for wind-powered electrical power generation that has improved efficiency, a wind-powered device (1) for generating electrical power is proposed, comprising a vertical rotor (2), a first drive shaft (3) that can be driven by the vertical rotor (2), a second drive shaft (4), an electric generator (5) that can be driven by the second drive shaft (4), and a movable lever device (6). The first drive shaft (3) is operatively connected to the lever device (6) to drive the latter, and the lever device (6) is operatively connected to the latter to drive the second drive shaft (4). The lever device (6) comprises a lever linkage (7).which lever linkage (7) is designed such that it can perform a pendulum movement (10) between a first pendulum position and a second pendulum position without losing the operative connection to the first drive shaft (3) and to the second drive shaft (4).