Wave Power Control System With Flywheel Energy Storage
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Solution Overview
Problem
Wave power generation systems face challenges in stabilizing energy conversion from irregular kinetic energy to rotational kinetic energy for effective power generation due to the unpredictable nature of wave movements.
Innovation Solution
A power generation facility system that includes a power transmitter to transfer wave kinetic energy, a motion converter to convert it to rotational kinetic energy, and a dual-route system where the rotational kinetic energy is either generated into electricity or stored and restored using a motor and condenser, with a controller managing energy transfer via a 3-phase current rectification scheme and inverter switching scheme based on energy thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wave energy is directly converted to rotational kinetic energy without energy storage, then the system structure is simple, but the energy conversion is unstable due to irregular wave movements
Solution Approach 1:
The system performs preliminary action by storing rotational kinetic energy in the rotating body (flywheel) before power generation is needed. The motion converter accumulates energy from irregular wave movements in advance, creating a stable energy reservoir that can be converted to electricity at a constant rate, thus resolving the contradiction between simple structure and stable conversion.
2Stability of the object's composition
If rotational kinetic energy is stored using a motor and condenser, then energy conversion stability is improved, but the device complexity increases
Solution Approach 1:
The rotating body serves multiple functions: it acts as both a motion converter that transforms linear wave motion to rotational motion, and as an energy storage device (flywheel). This multi-functionality reduces the need for separate storage components, thereby limiting the increase in device complexity while maintaining stable energy conversion.
3Productivity
If the motion converter continuously converts wave kinetic energy to rotational kinetic energy, then the power generation output is maximized, but the system performance degrades under low wave energy conditions
Solution Approach 1:
The system dynamically adjusts its operation based on wave energy availability. The controller modulates the motion converter's operation to accumulate energy during high-wave conditions in the rotating body, then maintains stable power output during low-wave conditions by drawing from stored rotational energy. This dynamic adaptation resolves the contradiction between maximizing output and maintaining reliability.
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 efficiently stabilizes energy conversion by directing rotational kinetic energy to either power generation or storage, minimizing performance degradation and maintaining consistent output despite irregular wave conditions.
Implementation Method 1
a buoyant body that moves by wave energy
Implementation Method 2
transfer kinetic energy of a buoyant body that moves by wave energy
Implementation Method 3
convert the kinetic energy transferred from the power transmitter to rotational kinetic energy of a rotating body
Implementation Method 4
a condenser in which the rotational kinetic energy is converted to electrical energy and thereby stored
Implementation Method 5
a motor configured to operate using the rotational kinetic energy or energy stored in the storage
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A power generation facility control system includes a power transmitter including a connection member configured to transfer kinetic energy of a buoyant body that moves by wave energy, a motion converter configured to convert the kinetic energy transferred from the power transmitter to rotational kinetic energy of a rotating body, a first route configured to receive the rotational kinetic energy from the motion converter, and to generate electric power, and a second route configured to receive and store the rotational kinetic energy from the motion converter, or to transfer, to the motion converter, rotational kinetic energy that is restored using stored energy.