Hydraulic Power Split Coupling for Stable Tidal Turbine Output
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Solution Overview
Problem
Existing turbine systems struggle to efficiently convert wind and river energy into electrical power due to inconsistent energy input, leading to inefficiencies and waste when energy input exceeds the maximum power rating of generators, and they fail to capture the full potential of renewable energy sources like wind and hydrokinetic power.
Innovation Solution
Incorporation of a power split transmission coupling within the turbine system to adjust torque transmission and divert hydraulic fluid during excess energy conditions, storing it for later use, and utilizing hydraulic motors to supplement power generation during low energy periods, thereby maintaining consistent power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If turbines use mechanical brakes or adjust gearbox ratios to prevent generator overload, then generator reliability is improved, but energy capture efficiency deteriorates
Solution Approach 1:
The system performs preliminary action by storing excess hydraulic energy in the accumulator before it can cause generator overload. When energy input exceeds generator capacity, the surplus is diverted to charge the hydraulic accumulator, preparing energy for later use rather than dissipating it through brakes. This anticipatory storage mechanism prevents the need for mechanical braking while maintaining energy capture.
Solution Approach 2:
The hydraulic accumulator acts as an intermediary between the turbine and generator, mediating the energy flow. Instead of directly connecting turbine output to generator input, the accumulator buffers excess energy, allowing the system to capture full turbine potential while protecting the generator from overload. This intermediary component enables both high energy capture and generator reliability.
2Productivity
If turbines operate at full power capacity continuously, then productivity is improved, but device complexity increases
Solution Approach 1:
The hydraulic system serves multiple functions: it transmits power from the turbine, stores excess energy in the accumulator, and provides supplemental power through the hydraulic motor during low-energy periods. This multi-functionality allows the system to maintain high productivity without adding proportionally complex components, as the same hydraulic infrastructure performs multiple roles.
Solution Approach 2:
The system implements self-service by using its own hydraulic system to regulate power flow and maintain generator operation within optimal parameters. The accumulator automatically charges during excess energy conditions and discharges during deficits, creating a self-regulating mechanism that maintains productivity without requiring complex external control systems.
3Power
If mechanical brakes are used to reduce energy input to generator, then power rating compliance is improved, but loss of energy increases
Solution Approach 1:
The system converts what would be harmful excess energy into a beneficial stored resource. Instead of allowing excess energy to damage the generator or wasting it through mechanical brakes, the system directs this surplus energy to charge the hydraulic accumulator. The previously harmful overload condition becomes a useful charging opportunity, transforming energy that would have been lost into stored power for later use.
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 energy capture and conversion efficiency by stabilizing power generation, reducing the need for mechanical braking, and increasing the operational lifespan of generators by utilizing stored hydraulic energy during fluctuating river and wind conditions.
Implementation Method 1
transmit the rotor torque to the output shaft by working a hydraulic fluid
Implementation Method 2
store the excess hydraulic energy under pressure in a storage vessel
Implementation Method 3
utilizing hydraulic motors to supplement power generation during low energy periods
Data Source
AI summary
Methods, systems and apparatuses including systems and methods that can be used for operating a hydrokinetic turbine such as along one or more flow channels of an ocean tidal region for power generation is disclosed. The hydrokinetic turbine can be positioned within the one or more flow channels or can be shaped to form one or more flows and can be turned by the flow of the ocean tidal region.