Kite Power System Controller for Stable Grid Supply
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Solution Overview
Problem
Wind power generation systems using kite-shaped flying objects face variability in power output due to changing wind conditions, making it challenging to consistently meet power demands at specific locations, as the lift force and wind speed can fluctuate significantly over time and by location.
Innovation Solution
A power generation system comprising multiple kite-shaped flying objects connected to a power transmission network, with a power supply controller that coordinates power distribution from each device to ensure stable power delivery to facilities by adjusting the altitude and aerodynamic forces of the kite-shaped flying objects and utilizing a network to transmit power from devices with excess capacity to those that need it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single kite-shaped flying object is used for power generation, then the device complexity is low, but the power supply stability deteriorates due to wind condition variability
Solution Approach 1:
The patent combines multiple kite-shaped power generation devices into a single power supply system, where each device independently generates power and the outputs are aggregated. This merging approach maintains individual device simplicity while achieving overall system stability through diversified power sources that are not simultaneously affected by the same wind conditions.
Solution Approach 2:
The power generation system is segmented into multiple independent kite-shaped devices distributed at different locations. Each segment operates autonomously, and the segmentation allows the system to exploit spatial variability in wind conditions, ensuring that when one device experiences low wind, another may be generating power normally.
2Reliability
If multiple power generation devices are deployed at different locations, then the power supply stability improves, but the device complexity increases
Solution Approach 1:
Each kite-shaped power generation device is designed as a universal unit capable of independent operation. The standardized design allows multiple identical devices to be deployed across different locations without increasing operational complexity, as each unit performs the same function autonomously and can be managed through a common control framework.
Solution Approach 2:
Each power generation device operates autonomously, self-adjusting to local wind conditions without requiring complex centralized control. The devices independently monitor their own performance and environmental conditions, reducing the overall system complexity while maintaining multiple distributed units for improved reliability.
3Power
If power is transmitted from multiple devices to a single facility, then the power demand coverage improves, but the power transmission loss increases
Solution Approach 1:
The system transmits power from each kite-shaped device to the nearest or most appropriate facility, creating localized power transmission paths. This approach minimizes transmission distances and associated losses while ensuring that each facility receives sufficient power from the most efficient source, optimizing the balance between coverage and energy efficiency.
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 configuration allows for stable and efficient power supply to meet demand by leveraging the wind energy in high-altitude regions, minimizing power loss through optimized power transmission paths and ensuring that target power is met even when individual devices cannot provide enough power due to varying wind conditions.
Implementation Method 1
a kite-shaped flying object... that is lifted up into the air by wind power, and staying and standing still in the air... where the lift force of wind makes the flying object rising into the air
Implementation Method 2
a generator... to convert wind power rotating the wind turbine into electric power... rotational power generated when the tether connected to a staying structure is unwound from the rotating body is converted into electric power
Data Source
AI summary
In a system of the disclosure, power generation devices installed at separate places include a kite-shaped flying object staying in the air, a generator installed on a ground and a tether operatively connecting the two to each other. The tether, which is pulled when the kite-shaped flying object rises, rotates a rotor of a generator to generate power. A power supply controller controls power supply such that, when power suppliable from a power generation device meets a target power needed by a power receiving facility, power is supplied from the power generation device to the power receiving facility, and when the target power of the power receiving facility exceeds the power suppliable from the power generation device, power from another power generation device is supplied to the power receiving facility.