Ozone Generator Reactor for Inrush Current Suppression
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Solution Overview
Problem
Ozone generation in ozone generation devices is unstable due to inrush current flowing through the dielectric electrode when switching elements in the harmonic inverter are switched from off to on, caused by pulse width modulation (PWM) control in the power supply.
Innovation Solution
An ozone generation device incorporating an inverter, an ozone generator, and a reactor, where the reactor is connected in series to the dielectric electrode to reduce inrush current and stabilize ozone generation by applying PWM control, converting DC power to AC power and applying it to a dielectric electrode to generate ozone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If PWM control is used in the harmonic inverter to convert DC power to AC power, then power conversion efficiency is improved, but inrush current flows through the dielectric electrode causing unstable ozone generation
Solution Approach 1:
A reactor is introduced as an intermediary component connected in series between the harmonic inverter and the dielectric electrode. The reactor mediates the inrush current generated by PWM switching, preventing it from directly flowing through the dielectric electrode while allowing the PWM control to continue operating for efficient power conversion.
Solution Approach 2:
The reactor provides preliminary opposition to the inrush current before it can affect the dielectric electrode. By placing the reactor in series upstream, it preemptively counteracts the harmful current surge caused by PWM switching, stabilizing the current flow to the dielectric electrode.
2Power
If switching elements are switched from off to on in the harmonic inverter, then AC power output is generated, but inrush current causes unstable discharge in the discharge gap
Solution Approach 1:
The reactor serves as a mediating component between the switching elements and the discharge gap. It filters and smooths the current waveform, preventing the abrupt current changes from switching operations from directly impacting the discharge stability in the gap.
Solution Approach 2:
The reactor provides cushioning against the abrupt current changes that occur during switching operations. By positioning the reactor in series before the dielectric electrode, it absorbs and dampens the current shocks, protecting the discharge gap from instability.
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 reactor effectively reduces inrush current and stabilizes ozone generation, suppressing fluctuations in ozone production, ensuring consistent ozone output.
Implementation Method 1
an inverter for converting DC power into AC power by pulse width modulation (PWM) control
Implementation Method 2
the discharge gap generates barrier discharge in raw material gas flowing in the discharge gap such that ozone is generated by the barrier discharge
Data Source
AI summary
An ozone generation device includes an inverter, an ozone generator, and a reactor. The inverter turns on and off a switching element by pulse width modulation (PWM) control to convert DC power into AC power. In the ozone generator, voltage of the AC power is applied to a dielectric electrode, and discharge is generated in raw material gas flowing in a discharge gap between the dielectric electrode and a metal electrode, so that ozone is generated by the discharge. The reactor is connected in series to a dielectric electrode, and reduces an inrush current that flows through the dielectric electrode when the switching element is switched from off to on by the PWM control by the inverter.