Active Dipole Coupling for Galvanically Isolated Electrical Networks
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Solution Overview
Problem
Electrical networks that need to interact without being galvanically connected, such as those separated by distance or voltage differences, face challenges in practical interaction and testing due to the impracticality of direct connections.
Innovation Solution
A coupling device composed of active electrical dipoles with measurement and control capabilities, connected via a data link, allows non-galvanic coupling by transmitting and synchronizing current and voltage values between networks, mimicking a direct galvanic connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two electrical networks are galvanically separated to maintain potential separation or due to distance constraints, then safety and practicality are improved, but electrical interaction and testing capability deteriorate
Solution Approach 1:
The patent introduces a coupling device as an intermediary between two galvanically separated electrical networks. This coupling device includes measurement means to detect electrical parameters, conversion means to transform these parameters into signal form, and transmission means to send signals across the galvanic boundary. This intermediary system enables electrical interaction while maintaining galvanic separation, resolving the contradiction between safety and operational capability.
2Ease of operation
If direct wireline connection is used between electrical networks, then electrical interaction is improved, but practicality deteriorates due to distance constraints and safety concerns
Solution Approach 1:
The patent replaces the mechanical wireline connection system with an electromagnetic signal transmission system. Instead of physically connecting electrical networks through conductors, the invention uses measurement means to detect electrical parameters, converts them to signals, and transmits them through non-galvanic coupling. This substitution eliminates the need for physical proximity and direct electrical connection, resolving the practicality issues associated with distance and safety.
3Reliability
If galvanic separation is maintained between electrical networks, then safety and distance constraints are addressed, but measurement and control capability deteriorate
Solution Approach 1:
The coupling device acts as an intermediary that includes measurement means positioned to detect electrical parameters in both galvanically separated networks. These measurement means capture voltage, current, and other electrical characteristics without requiring direct galvanic connection. The measured parameters are then converted and transmitted for monitoring and control, preserving measurement capability while maintaining galvanic separation for safety.
Data Source
AI summary
Assembly of non-galvanically coupled networks, having two electrical networks and having a coupling device via which the electrical networks which are each galvanically connected to the coupling device by means of two connecting points are coupled to one another without being galvanically interconnected. The coupling device consists of two active electrical dipoles which are interconnected via at least one data link, can be operated both as a source and as a sink, and have measurement means for current and voltage. The dipoles are designed to provide current and/or voltage for the respective electrical network which are galvanically connected thereto in accordance with a target value received for this purpose from the respective other active electrical dipole, and to transmit the current and/or voltage values subsequently measured at the connecting points to the respective other active electrical dipole as a target value for the source/sink formed by this dipole.