Wind Power Generating Device for Transportation Vehicles
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Solution Overview
Problem
Wind power generating devices mounted on transportation vehicles face overheating and breakdown due to high wind speeds, which exceed the operational limits of the blades and power generators.
Innovation Solution
A self-adjusting braking mechanism is integrated into the wind power generating device, comprising a rotor component with a blade and drive shaft, and a brake component with a brake disc and actuator, where the brake actuator is activated by wind force to apply a braking force when wind speeds exceed a specified value, and a power generating assembly with a maximum power point tracker for efficient energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the blade is driven by high wind speed to rotate faster to generate more power, then the power generation efficiency is improved, but the blade and power generator overheat and break down due to excessive speed
Solution Approach 1:
The brake actuator is pre-configured with a wind collector that faces the wind flow. When wind speed exceeds the safe operating threshold, the wind force automatically activates the brake actuator to apply braking force to the brake disc, preventing the blade and power generator from overheating and breaking down due to excessive rotation speed
Solution Approach 2:
The excessive wind force that would normally cause harmful overheating and breakdown is converted into a beneficial braking force. The wind collector captures the strong wind and transforms it into mechanical force through the lever system, which activates the brake pad to press against the brake disc, thereby utilizing the harmful high wind energy to slow down the rotor and protect the system
2Reliability
If a brake mechanism is added to control rotor speed, then the device reliability is improved, but the device complexity increases
Solution Approach 1:
The brake mechanism is designed to be self-activating through the wind collector and lever system. When wind speed exceeds the threshold, the wind force automatically swings the lever to activate the brake pad, eliminating the need for external sensors, controllers, or power sources. The system serves itself by using the wind energy to trigger its own protection mechanism
Solution Approach 2:
The lever acts as a mechanical intermediary that translates the wind force applied to the wind collector into the braking force applied to the brake disc. This simple mechanical linkage efficiently transfers and amplifies the force without requiring complex control systems, reducing overall device complexity while 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
The braking mechanism prevents overheating and breakdown by controlling rotor speed, while the MPPT ensures efficient power generation and storage, maintaining device efficiency across varying wind conditions.
Implementation Method 1
a wind force applying on the wind collector swings the lever by taking the lever fulcrum as the fulcrum
Implementation Method 2
the brake pad relatively swings forward to touch and brake the brake disc by means of the leverage of the brake actuator
Implementation Method 3
an elastic restoring force applied to the brake actuator makes the wind collector of the brake actuator swing forward to return to an initial position and make the brake pad of the brake actuator swing backward to release a brake
Implementation Method 4
the power generating element being in drive connection with the drive shaft such that the power generating element is driven by the drive shaft to generate electric energy
Data Source
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AI summary
A wind power generating device includes: a power source assembly and a power generating assembly, the power source assembly including a brake disc and a brake actuator, the brake actuator being configured to swing around a lever fulcrum, and the brake actuator being provided with a wind collector on one side with respect to the lever fulcrum to receive wind force and a brake pad corresponding to the brake disc on the other side such that when the wind collector swings backward because of wind force from the front, the brake pad relatively swings frontward to touch the brake disc by leverage so as to apply a brake force to a rotor component of the power source assembly, and the power generating assembly including a maximum power point tracker (MPPT) such that the generated electric energy is stored to an energy storage element under control of the MPPT.