Transformer with Sealed Windings for Plasma Generator
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Solution Overview
Problem
Conventional transformers used in high-voltage inverter devices for atmospheric-pressure plasma generators face issues with reduced self-resonant frequency and frequency bandwidth due to increased distributed capacitance from insulation layers, leading to limited switching frequency control and reliability concerns from electric discharges.
Innovation Solution
A transformer design with sealed windings and minimal insulation material, using air as an insulating medium to reduce distributed capacitance and maintain a stable output, allowing for higher self-resonant frequency and improved reliability by minimizing water molecule leakage and external environmental influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulation layers are provided between divided windings to ensure sufficient magnetic flux density, then insulation reliability is improved, but distributed capacitance increases leading to decreased self-resonant frequency
Solution Approach 1:
The patent applies flame-retardant tape insulation layers between divided windings, using thin film structures to provide necessary insulation while minimizing the volume occupied by insulating materials. This reduces distributed capacitance compared to bulk insulation methods, thereby maintaining higher self-resonant frequency while ensuring insulation reliability for high-voltage operation.
2Power
If the number of turns is increased to achieve high output voltage, then voltage transformation ratio is improved, but distributed capacitance increases causing decreased self-resonant frequency and reduced frequency bandwidth
Solution Approach 1:
The patent uses thin flame-retardant tape insulation layers between windings and winding sections, minimizing the volume of insulating materials. This approach allows the necessary number of turns to be achieved for high output voltage while keeping distributed capacitance low, thereby maintaining high self-resonant frequency and adequate frequency bandwidth for the intended application.
3Reliability
If insulation layers are added between windings, then electrical insulation is improved, but the area occupied by insulation increases leading to increased distributed capacitance
Solution Approach 1:
The patent employs thin flame-retardant tape insulation layers between windings and winding sections, using minimal area insulating materials to achieve necessary electrical insulation. This minimizes the area occupied by insulation, thereby reducing distributed capacitance while maintaining adequate electrical insulation for high-voltage operation.
4Quantity of substance
If self-resonant frequency is increased by reducing distributed capacitance, then switching frequency bandwidth is improved, but insulation reliability may be compromised
Solution Approach 1:
The patent uses flame-retardant tape insulation layers that provide necessary electrical insulation while occupying minimal volume and area. This reduces distributed capacitance to maintain high self-resonant frequency and adequate switching frequency bandwidth, while the flame-retardant property ensures insulation reliability for high-voltage plasma generator operation.
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 transformer achieves a higher self-resonant frequency and increased switching frequency bandwidth, reducing electric discharges and enhancing reliability by eliminating water molecule-induced leakage and maintaining stability across varying environmental conditions.
Implementation Method 1
A transformer includes: a first winding; a second winding provided to maintain a first distance to the first winding
Data Source
AI summary
A transformer includes: a first winding; a second winding provided to maintain a first distance to the first winding; and a shell that seals the first winding and the second winding.