Wind-Wave Complementary Energy Integrated System
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Solution Overview
Problem
Current offshore wind energy systems face challenges in efficiently harnessing wave energy due to low energy conversion rates, high generation costs, and low reliability of wave energy converters, limiting the commercialization of wave energy generators.
Innovation Solution
A wind-wave complementary energy integrated system using a fixed single pile structure, incorporating a wind turbine, a wave energy device with a movable frame and gear mechanism, and a single pile foundation, where wave energy is converted into electrical energy and transmitted alongside wind energy, sharing a common support structure and power transmission system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wave energy converters are used independently, then wave energy can be harvested, but energy conversion rate is low and generation costs are high
Solution Approach 1:
The patent combines wind energy converters and wave energy converters into a single integrated system sharing common support structures and power transmission systems. The wind turbine is installed on the tower while wave energy devices are mounted on the tower near the sea surface, allowing both energy sources to be harvested simultaneously from the same location, thereby improving overall energy conversion rate and reducing generation costs through resource sharing.
Solution Approach 2:
The support structure (tower and single pile foundation) serves multiple functions: it supports the wind turbine for wind energy conversion, mounts wave energy devices for wave energy conversion, and provides a common power transmission system for both energy sources. This multi-functional design eliminates the need for separate independent structures, reducing costs and improving efficiency.
2Reliability
If separate wind and wave energy systems are deployed, then each energy source can be optimized, but system complexity and costs increase
Solution Approach 1:
The patent merges wind and wave energy systems into a single integrated platform where the same tower and single pile foundation support both energy conversion systems. The power transmission systems are also integrated, allowing both wind and wave generated electricity to be transmitted through common infrastructure, thereby reducing system complexity and costs while maintaining the reliability benefits of both energy sources.
3Productivity
If wave energy devices are added to existing wind turbine bases, then resource utilization improves, but structural integrity may be compromised
Solution Approach 1:
The patent segments the wave energy devices into modular components that can be mounted on the tower near the sea surface without compromising the structural integrity of the wind turbine base. The wave energy devices are positioned in a way that separates their operational requirements from the critical wind turbine support structure, allowing both systems to function independently while sharing common infrastructure.
Solution Approach 2:
The patent applies local quality by positioning wave energy devices specifically on the tower near the sea surface, where they can access wave energy without interfering with the wind turbine's structural requirements. The single pile foundation and tower structure are designed to accommodate both systems with appropriate local modifications, ensuring that the addition of wave energy devices does not compromise the overall structural integrity.
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
This system enhances resource utilization and power generation efficiency, reduces costs, and stabilizes the energy collection process by integrating wind and wave energy, ensuring stable operation and efficient energy conversion without disrupting the existing wind turbine base.
Implementation Method 1
a wind turbine, a tower, a wave energy device and a single pile foundation. The wind turbine is connected to the tower
Implementation Method 2
the wave energy device is mounted on the tower near the sea surface... the wave energy device includes a sleeve and a movable frame... Two long sides of the bottom frame of the movable frame are round-smooth straight bars... the round-smooth straight bars can be connected to the tower and support the movable frame to be sleeved in an outer circumference of the tower
Implementation Method 3
a rack along the long side is installed between the two horizontal frames on the two opposite short side frames, two ends of each rack are fixed to the two horizontal frames, and the racks are located between the long side and the tower in the horizontal direction, above the racks, a gear is engaged with the racks, the gear is connected to a generator by a rotation shaft
Data Source
AI summary
The wind-wave complementary energy integrated system based on fixed foundation and generation and transmission method thereof pertains to the field of ocean renewable energy utilization, solving the problem of combining the wind and wave energy in a support structure, including a wind turbine, a tower, a wave energy device and a single pile foundation, the wind turbine is connected to the tower, and the single pile foundation is at the bottom of the tower, the single pile foundation is connected to the seabed, and the wave energy device is mounted on the tower near the sea surface. The effect is the renewable energy utilization rate and the energy conversion rate are effectively improved, thus reducing the cost to a certain extent and having high utility.