Galvanic Isolation Circuit for Interference Energy Recovery
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Solution Overview
Problem
Existing circuit topologies are inadequate in universally damping electrical interference signals from various sources, such as switched inductive loads, and fail to effectively utilize or isolate interference energy for feedback.
Innovation Solution
A circuit arrangement featuring a transformer with primary and secondary windings, an input capacitor, and a rectifier to attenuate and convert interference signals, allowing energy feedback and isolation, which can be integrated into diverse circuit topologies without modifying existing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If existing circuit topologies are used to damp interference signals, then interference signals can be attenuated to some extent, but the interference energy cannot be utilized or isolated for feedback, and the circuits lack universal applicability
Solution Approach 1:
The circuit arrangement is designed with universal applicability to be integrated into diverse circuit topologies without modifying existing components. The transformer-based architecture with primary and secondary windings can handle various interference signal types and polarities, making the circuit adaptable to different applications while maintaining energy feedback capability.
Solution Approach 2:
The circuit converts harmful interference energy into beneficial feedback energy by rectifying the interference signal and feeding it back through the transformer. The rectifier converts AC interference signals to DC, which is then fed back to the supply source, transforming waste interference energy into useful energy that can offset supply losses.
2Productivity
If interference energy is isolated and fed back to improve efficiency, then energy utilization improves, but the circuit complexity increases due to additional components
Solution Approach 1:
The circuit implements energy feedback by rectifying interference signals and feeding the converted DC energy back to the supply source through the transformer. This feedback mechanism improves circuit efficiency by recovering energy that would otherwise be lost as interference, while the feedback path is integrated seamlessly into the existing circuit architecture.
Solution Approach 2:
The transformer acts as an intermediary component that galvanically isolates the interference signal processing from the main circuit while enabling energy transfer. This intermediary approach allows the circuit to handle various interference types without direct coupling, maintaining simplicity while achieving energy feedback and isolation.
3Ease of manufacture
If a passive circuit design is used to simplify implementation, then ease of manufacture improves, but the ability to actively control or regulate interference damping is reduced
Solution Approach 1:
The passive circuit design employs self-service principles where the interference signal itself provides the energy for damping through the rectifier and feedback mechanism. The circuit automatically processes interference signals without requiring external control signals or active regulation, achieving both simplicity in implementation and effectiveness in interference damping through its self-contained energy recovery and feedback loop.
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
Effectively separates interference signals from useful signals, converts interference energy into usable energy, and enhances circuit efficiency by utilizing energy feedback in a galvanically isolated manner, suitable for various interference types and polarities, with a simple and passive implementation.
Implementation Method 1
The circuit arrangement has a transformer with at least one primary winding and at least one secondary winding
Implementation Method 2
The circuit arrangement can have a rectifier, which is designed to rectify a signal present at the secondary winding, the rectified signal being output at the feedback connection pole for energy feedback
Implementation Method 3
The circuit arrangement can have an input capacitor or DC decoupling capacitor, the input capacitor or DC decoupling capacitor and the primary winding being looped in in series
Data Source
AI summary
A circuit arrangement (1a) is used to attenuate an electrical interference signal which is caused by an electrical interference source (2). The circuit arrangement (1a) has: an input connection pole (3) which is intended to be electrically connected to the interference source (2), a feedback connection pole (4) at which a feedback signal is output, said feedback signal being generated from the interference signal, a transmitter (5a) with a primary winding (6) and at least one secondary winding (7, 8), wherein the primary winding (6) is electrically coupled to the input connection pole (3), and wherein the at least one secondary winding (7, 8) is electrically coupled to the feedback connection pole (4).