Voltage Detection Printed Board for High-Frequency Power Systems
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Solution Overview
Problem
Existing current and voltage detectors in high-frequency power systems face variations in detection values due to wiring issues and self-resonant frequency limitations, making them unreliable for multiple installations and maintenance challenging.
Innovation Solution
A current detection printed board with a coiled wire formed by through holes and pattern wires, and a voltage detection printed board with a ring-shaped wire, both designed to reduce variations in detection values and simplify installation and maintenance by using electromagnetic induction and capacitive detection respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wiring methods are used for current and voltage detectors, then installation is straightforward, but detection values show significant variations and reliability decreases
Solution Approach 1:
The patent replaces traditional mechanical wiring connections with electromagnetic field-based detection. The current detector uses a coil that generates a magnetic field to detect current through electromagnetic induction, while the voltage detector uses a capacitor that generates an electric field to detect voltage through electrostatic induction. This substitution eliminates contact resistance and wiring variations, significantly improving detection value consistency and reliability.
2Adaptability or versatility
If self-resonant frequency limitations are not addressed, then detector design is simple, but detectable frequency band is restricted
Solution Approach 1:
The patent changes the physical parameters of the detectors to extend the detectable frequency band. The current detector uses a coil with optimized inductance and the voltage detector uses a capacitor with optimized capacitance, allowing them to operate effectively at higher frequencies including self-resonant frequencies. This parameter optimization enables the detectors to handle high-frequency power signals that were previously undetectable.
3Ease of repair
If traditional detectors are used, then manufacturing is simple, but maintenance is challenging and time-consuming
Solution Approach 1:
The patent merges the current detector, voltage detector, and power transmission conductor into a single integrated printed board structure. The coil and capacitor are fabricated directly on the printed board using standard PCB techniques, eliminating the need for separate detector units and complex wiring. This integration simplifies maintenance by reducing the number of components and connection points that can fail.
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 solution reduces variations in current and voltage detection values, enhances detection accuracy, and simplifies the manufacturing and maintenance of high-frequency power systems by stabilizing the detection process and extending the detectable frequency band.
Implementation Method 1
when a conductor, in which an AC current flows, is disposed to pass through the inside of the penetration hole, a current flowing in the wire is output through electromagnetic induction
Implementation Method 2
a voltage detection printed board with a ring-shaped wire, both designed to reduce variations in detection values and simplify installation and maintenance by using electromagnetic induction and capacitive detection respectively
Data Source
AI summary
A voltage detector having a voltage detection printed board including a board having a penetration hole that penetrates the board, a first pattern wire formed at a periphery of the penetration hole, a second pattern wire formed at the periphery of the penetration hole, and a plurality of through holes that penetrate the board between the first and second pattern wires. Also provided is a conductive casing in which the voltage detection printed board is fixed, wherein, when a conductor, in which AC voltage is generated, is disposed to pass through the penetration hole, the pattern wires act with the conductor to function as electrodes of a capacitor.