Rail Vehicle Contactless Energy Generation via Linear Magnet Guide
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Solution Overview
Problem
Conventional rail systems face challenges in maintaining safety-relevant functions during electrical supply malfunctions, as existing technologies do not effectively ensure continuous energy generation and data transmission without wear or contact.
Innovation Solution
A system comprising two parts with permanent magnets and coil cores, where the magnets are guided linearly and limited in movement, generating a magnetic flux that induces a bias voltage independently of speed and direction, allowing for contactless and wear-free energy generation and data transmission, even during electrical supply failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical supply systems are used in rail systems, then normal operation is maintained, but safety functions cannot be ensured during electrical supply malfunctions
Solution Approach 1:
The system performs preliminary action by generating and storing energy in the capacitor during normal operation (when electrical supply is available). This pre-stored energy enables safety functions to operate independently during electrical supply failures, resolving the contradiction between normal operation and safety function continuity during malfunctions.
Solution Approach 2:
The system segments the power supply into two independent parts: the main electrical supply and the independent energy generation system with permanent magnet and capacitor. This segmentation allows the safety functions to operate autonomously from the main supply, ensuring reliability during electrical supply failures.
2Reliability
If contactless energy generation is implemented using permanent magnets and windings, then wear-free operation is achieved, but consistent energy generation independent of speed and direction is difficult
Solution Approach 1:
The guide performs preliminary action by pre-positioning the permanent magnet at specific locations (first and second positions) relative to the winding. This ensures that regardless of the direction or speed of movement, the magnet will always pass through these predetermined positions, generating consistent energy pulses independent of motion parameters.
Solution Approach 2:
The system exploits parameter changes by utilizing the natural variation in magnetic flux as the permanent magnet moves through different positions relative to the winding. The magnetic flux density changes as the magnet approaches and recedes from the winding, and this parameter change is harnessed to generate electrical energy consistently regardless of speed or direction.
3Ease of operation
If the permanent magnet is allowed free movement for energy generation, then contactless operation is achieved, but precise control of magnetic flux reversal is lost
Solution Approach 1:
The guide acts as an intermediary between the permanent magnet and the winding, providing contactless guidance while precisely controlling the magnet's movement. The guide ensures the magnet passes through specific positions at the correct locations relative to the winding, achieving both contactless operation and precise magnetic flux control simultaneously.
Solution Approach 2:
The system replaces direct mechanical contact control with a magnetic field-based control mechanism. The guide structure, combined with the magnetic field interaction, controls the magnet's position and movement without mechanical contact, substituting mechanical control with electromagnetic control to achieve both contactless operation and precise flux reversal.
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 ensures continuous operation of safety functions and data transmission by generating a consistent energy pulse regardless of speed or direction, maintaining functionality even when the electrical power supply fails, and allowing for operation across track switches.
Implementation Method 1
a magnetic flux generated by the permanent magnet is conducted through the leg of the coil core... the greatest possible change in the magnetic flux flowing through the winding of the first part being induced during the decaying process
Implementation Method 2
the permanent magnet of the first part is repelled at a magnetic field generated by the second part, e.g., by a permanent magnet of the second part
Data Source
AI summary
A system and installation with a rail vehicle movably arranged on a rail part, includes a first part and a second part. The first part and the second part are movable in parallel relative to each other in a movement direction. The first part has a winding around a leg of a coil core, e.g., a center leg, and the first part has a guide, e.g., a linear guide, and a permanent magnet situated so as to be movable in parallel with the movement direction, e.g., in a linear fashion. The permanent magnet is guided by the guide, e.g., in the movement direction, and, for example, is limited in the front and back in the movement direction.