High Frequency Current Damping Device with Parallel Spaced Elements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High frequency noise in bus bars of electrical power installations, particularly in high voltage applications, is not effectively attenuated by existing damping technologies, which often rely on the skin effect but lack efficient methods to reroute and attenuate high frequency currents effectively.
Innovation Solution
A device with two separate damping paths, each comprising a damping element spaced apart from a conductor and electrically connected in parallel, utilizes the skin effect to reroute high frequency currents into higher resistance paths, enhancing attenuation through a magnetic field-induced air gap, allowing for adjustable design parameters to optimize damping characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If damping elements are placed close to the conductor for effective high frequency current damping, then the damping effect is improved, but the device occupies more space and installation complexity increases
Solution Approach 1:
The patent transitions from planar placement to three-dimensional spatial arrangement by positioning damping elements at opposite sides of the conductor with spacing, utilizing the air gap for magnetic field generation. This dimensional approach achieves effective damping while reducing overall device volume and simplifying installation.
2Adaptability or versatility
If damping elements are spaced apart from the conductor, then the device design flexibility is improved and space requirements are reduced, but the magnetic field effect for forcing high frequency currents into damping paths is weakened
Solution Approach 1:
The patent optimizes the spacing parameter between the conductor and damping elements to achieve the desired balance. By carefully selecting the distance, the design maintains sufficient magnetic field effect for effective damping while gaining design flexibility and reducing space requirements. The spacing becomes a tunable parameter for optimizing performance.
3Reliability
If multiple damping paths are provided for high frequency current attenuation, then the damping effectiveness is improved, but the device complexity increases
Solution Approach 1:
The patent divides the damping function into multiple independent damping elements connected in parallel to the conductor. Each damping element provides a separate damping path for high frequency currents. This segmentation approach improves damping effectiveness by providing multiple attenuation paths while keeping each individual element simple and the overall structure manageable.
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 device provides significant attenuation of high frequency currents, offering increased design flexibility and reduced space requirements, while maintaining electrical withstand capabilities, making it suitable for high voltage applications with compact and efficient high frequency damping.
Implementation Method 1
High frequency damping technology may rely on the skin effect which is the tendency for an electric current to flow mainly at the outer surface of a conductor, such as a bus bar, within a thickness called the skin depth. The skin effect causes the effective resistance of the conductor to increase at higher frequencies where the skin depth is smaller.
Implementation Method 2
The magnetic field in this air gap forces the high frequency currents to flow in the first and second damping elements, thereby increasing the attenuation of the high frequency currents in the conductor.
Data Source
AI summary
A device for damping of high frequency currents is provided. The device includes a conductor extending along a main axis, a first damping path including a first damping element extending along a first axis and a second damping path including a second damping element extending along a second axis. The first and second damping elements are arranged on opposite sides of the conductor. The main axis, the first axis and the second axis are different and separate from each other. The first damping element and the second damping element are spaced apart from the conductor and electrically connected in parallel with the conductor between a first position and a second position along the conductor. Further, from the first position to the second position, a resistance of the conductor is lower than a resistance of either one of the first and second damping paths.