Wind Turbine Power Conductors for Magnetic Field Cancellation
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Solution Overview
Problem
Wind generators create magnetic fields from electrical transmission that disrupt and kill marine animals, such as fish and mammals, and also affect land-based animals and migratory birds.
Innovation Solution
The system uses two electrical conductors in close proximity, with alternating currents at different phases (ideally 170-190 degrees out of phase), to cancel out the magnetic fields generated by each conductor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a single electrical conductor is used for power transmission, then the electrical transmission system is simple, but magnetic fields are generated that harm marine animals and other wildlife
Solution Approach 1:
The patent combines two electrical conductors into a single transmission system, where the second conductor carries current at a phase shifted by approximately 180 degrees relative to the first conductor. This merging of conductors with opposite phase currents creates magnetic field cancellation, reducing the harmful magnetic field impact on wildlife while maintaining efficient power transmission capability.
Solution Approach 2:
The patent converts the harmful magnetic field effect into a beneficial cancellation mechanism. By introducing a second conductor with current phase-shifted by approximately 180 degrees, the magnetic field generated by the second conductor opposes and cancels the magnetic field from the first conductor, transforming the harmful electromagnetic effect into a protective mechanism that reduces wildlife impact.
2Object-affected harmful factors
If two electrical conductors with phase difference are used, then magnetic field impact on wildlife is reduced, but the electrical transmission system becomes more complex
Solution Approach 1:
The patent changes the electrical parameter of current phase by introducing a phase shift of approximately 180 degrees between the two conductors. This parameter change enables magnetic field cancellation while maintaining standard electrical transmission infrastructure, reducing the need for additional complex equipment and simplifying the overall system despite using two conductors.
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 significantly reduces the impact of magnetic fields on wildlife, providing a safer electrical transmission system for wind turbines.
Implementation Method 1
When two electrical conductors are used, the phase difference between the two is ideally within the range of 170-190 degrees. In this manner, as the first conductor creates a magnetic field, the second conductor's magnetic field is opposite, thereby nullifying or reducing the effect that a single alternating circuit would have.
Data Source
AI summary
An electrical transmission system especially suited for wind turbines being safer for wildlife. The transmission system using a first electrical conductor communicating an alternating electrical current at a first phase with a second electrical conductor in proximity to the first electrical conductor. The second electrical conductor communicating a second alternating electrical current at a second phase.