Wind Turbine Mast Generator Layout for Variable Windspeed
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Solution Overview
Problem
Conventional wind turbines face limitations such as a threshold windspeed requirement for initiation and the need for braking mechanisms to prevent damage during high winds, while also failing to fully utilize the potential of the wind turbine mast for energy conversion.
Innovation Solution
A wind turbine system that includes multiple generator modules, with at least one module utilizing the mast as an electrical generator module, featuring a magnetic assembly within the mast to induce an electric current, and a gearbox system to selectively engage or disengage the second generator module based on windspeed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the mast is used only for structural support, then the structural integrity is maintained, but the power generation capability is limited
Solution Approach 1:
The mast is designed to serve dual functions: structural support and power generation. The hollow interior of the mast houses a second rotor and generator system, allowing the same structural component to simultaneously support the turbine and generate additional electricity, thereby increasing power output without proportionally increasing system complexity
Solution Approach 2:
The generator system is nested within the hollow interior of the mast structure. The second rotor and generator are positioned inside the mast's hollow space, utilizing the existing structural envelope to house additional power-generating components without requiring separate external structures
2Reliability
If a threshold windspeed is required for rotation initiation, then the turbine can prevent low-speed damage, but energy collection is lost during low-wind periods
Solution Approach 1:
The system employs dynamic engagement mechanisms where the second rotor and generator can be selectively engaged or disengaged based on wind conditions. During high-wind conditions, the second generator is engaged to provide additional power and act as a brake. During low-wind conditions, it remains disengaged to allow the main rotor to start and operate without excessive resistance, thereby maintaining both reliability and productivity across varying wind speeds
3Reliability
If braking mechanisms are added for high-wind protection, then damage during high winds is prevented, but the device complexity increases
Solution Approach 1:
The second generator serves a dual purpose: it generates additional electricity during normal operation and acts as an electromagnetic brake during high-wind conditions. By engaging the second generator, the system creates electromagnetic resistance that slows the rotor without requiring separate mechanical braking components, thereby providing high-wind protection while minimizing additional system complexity
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
The system enhances power output by utilizing the mast for energy generation and improves operational efficiency by managing windspeed through the gearbox system, thereby optimizing energy collection and reducing damage risks.
Implementation Method 1
a magnetic assembly disposed within the mast and coupled to the second gearbox, the magnetic assembly adapted to induce an electric current
Data Source
AI summary
The present invention is a wind turbine system with multiple generator modules that maximize the use of the mast of a wind turbine by implementing an electrical generator module with a magnetic assembly. In some embodiments, the system includes a set of blades adapted to rotate on a horizontal axis and coupled to a first rotor. A first generator is coupled to the first rotor and disposed within a housing. The mast of the system extends from the housing and encloses a second generator module. A gearbox module is adapted to engage the first rotor through a first gear shaft and engage the second rotor through a second gear shaft. The gearbox module may be adapted to selectively engage the second generator module when a windspeed exceeds a threshold windspeed. A magnetic assembly disposed within the mast is adapted to induce an electric current.