Transformer-Coupled Plasma Reactor Off-State Power Protection
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Solution Overview
Problem
Plasma reactors using transformer coupled plasma (TCP) face issues with power unit damage due to continuous power supply when plasma is in an off state, as there is no effective monitoring and feedback control to prevent power return to the unit.
Innovation Solution
A plasma reactor with a control unit that monitors the electrical parameters, such as phase difference between current and voltage, to determine the plasma state and cut off or reduce power supply to the primary coil when the plasma is in an off state, using sensors to measure electrical signals and compare them to reference values to prevent power unit damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous power is supplied to the primary coil to maintain plasma generation capability, then plasma generation readiness is improved, but power unit damage risk increases when plasma is in off state
Solution Approach 1:
The patent implements a feedback control system where the control unit continuously monitors the plasma state by detecting electrical parameters (current, voltage, phase difference) from the primary coil and secondary coil. Based on this feedback, the control unit determines whether plasma is in on-state or off-state and adjusts power supply accordingly, cutting off power when plasma is off to prevent damage while maintaining readiness when plasma is on.
Solution Approach 2:
The power supply to the primary coil is made dynamic rather than static. The control unit continuously adjusts the power supply state (on/off or high/low power) based on real-time plasma condition detection. This dynamic adjustment allows the system to maintain plasma generation capability when needed while preventing damage when plasma is absent, resolving the contradiction between readiness and safety.
2Reliability
If power is cut off when plasma is in off state to prevent damage, then power unit reliability is improved, but plasma generation response time increases
Solution Approach 1:
The control unit continuously monitors plasma state and detects off-state conditions promptly through real-time measurement of electrical parameters. By detecting the off-state early and immediately responding to cut or reduce power, the system prevents damage while minimizing the time power is unnecessarily supplied, thus reducing response time loss.
Solution Approach 2:
The rapid feedback loop continuously monitors plasma conditions and immediately adjusts power supply when off-state is detected. This fast response mechanism ensures that power is cut off or reduced promptly, preventing both damage to the power unit and unnecessary time loss, as the system quickly transitions between power states based on real-time plasma conditions.
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 prevents power unit damage by accurately determining the plasma state and controlling power supply, ensuring efficient operation and extending the lifespan of the power unit.
Implementation Method 1
a magnetic core provided in a shape surrounding a portion of the reactor body, and wound with a primary coil for receiving power from a power unit, so as to generate plasma by exciting a gas in the annular loop space
Implementation Method 2
a sensor unit for measuring an electrical signal for obtaining the electrical parameter, and the control unit may obtain the electrical parameter based on the electrical signal
Data Source
AI summary
Provided is a plasma reactor including a reactor body having a gas inlet at a side thereof, a gas outlet at another side thereof, and an annular loop space therein, a magnetic core provided in a shape surrounding a portion of the reactor body, and wound with a primary coil for receiving power from a power unit, so as to generate plasma by exciting a gas in the annular loop space, and a control unit for determining whether the plasma is in an off state, by comparing, to a reference value, an electrical parameter related to an output of the primary coil.