How does a ceramic ozone tube power supply stably generate ozone through high-frequency, high-voltage output?
Publish Time: 2026-02-11
Ozone (O₃), a strong oxidant, is widely used in drinking water purification, wastewater treatment, food preservation, and medical disinfection. Its core generating device—the ceramic ozone tube power supply—relies on the principle of dielectric barrier discharge, using a high-frequency, high-voltage electric field to break down and recombine oxygen into ozone. The efficiency and stability of this process are highly dependent on the dedicated power supply.
1. High-Frequency, High-Voltage Drive: The Core of Improved Ozone Generation Efficiency
Ozone generation efficiency is closely related to the discharge frequency and voltage amplitude. Traditional industrial frequency power supplies, due to their low frequency and slow electric field changes, result in insufficient electron energy and low ozone yield. The ceramic ozone tube power supply, however, employs 20–50kHz high-frequency inverter technology, coupled with a 5–15kV peak high-voltage output, to create a rapidly alternating strong electric field between the inner and outer electrodes of the ceramic tube. This high-frequency electric field causes repeated polarization and collisions of gas molecules, significantly increasing the mean free path and energy of electrons, thereby significantly improving the O₂→O₃ conversion rate. Meanwhile, high-frequency operation reduces the size of transformers and filter components, making the power supply more compact and efficient.
To ensure long-term stability under high-frequency and high-voltage conditions, the power supply uses a dedicated gate driver chip to precisely control the switching sequence of the IGBTs, avoiding shoot-through short circuits caused by drive delays or oscillations. Simultaneously, high-power IGBT modules are selected as the main power devices, providing ample current and voltage margins. Even with load fluctuations or increased ambient temperature, they maintain a safe operating range, resulting in lower heat generation and longer lifespan. This combination of a powerful chip and precise control fundamentally improves the reliability of the power supply during continuous 24/7 industrial operation.
Ozone generation systems often face risks such as sudden load changes, electrode aging, and moisture intrusion. To address this, the power supply integrates triple protection against overcurrent, overheating, and short circuit:
Overcurrent Protection: Real-time monitoring of output current; immediately cuts off the drive signal if the set threshold is exceeded.
Overheat Protection: Built-in NTC temperature sensor automatically reduces power or shuts down when the heatsink temperature exceeds the limit.
Short Circuit Protection: Employs fast-blow and soft-turn-off technology to prevent IGBTs from exploding due to hard short circuits.
Crucially, the open-circuit overcurrent protection point is independently adjustable—users can flexibly set protection thresholds for ceramic tubes of different lengths and diameters or for different industries, avoiding accidental shutdowns while ensuring equipment safety.
4. Optimized Circuit Design: Improved Energy Efficiency and Electromagnetic Compatibility
The power supply uses an LLC resonant or phase-shifted full-bridge topology to achieve zero-voltage switching of the IGBTs, significantly reducing switching losses and achieving an overall efficiency of over 90%. Simultaneously, an EMI filter is installed at the input, and shielded high-voltage lines and common-mode chokes are used at the output to effectively suppress high-frequency noise interference to surrounding equipment, meeting the electromagnetic compatibility requirements of sensitive scenarios such as medical and laboratory settings.
Ceramic ozone tube power supply are far more than simple "high-voltage generators"; they are sophisticated energy systems integrating power electronics, thermal management, and intelligent protection. They precisely stimulate ozone reactions with high frequency and high voltage, withstand the harsh challenges of industrial environments with redundant design, and adapt to diverse application scenarios with adjustable parameters. It is this "efficient, stable, and flexible" power supply that enables ceramic ozone tubes to continuously release powerful and clean oxidizing energy in key areas such as water purification, disinfection, and oxidation, safeguarding health and environmental safety.
