Design and Implementation of a Germicidal UVC-LED Lamp.

Area of Science:

• Engineering
• Microbiology
• Environmental Science

Background:

• Traditional mercury UVC lamps are effective but face restrictions due to the Minamata Convention.
• Ultraviolet germicidal irradiation (UVC) at 254 nm effectively inactivates SARS-CoV-2.
• UVC-LED technology offers a mercury-free alternative, with commercial availability expanding to 254 nm.

Purpose of the Study:

• To design and implement a power electronic converter for 254 nm UVC-LED arrays.
• To enable safe and effective decontamination applications using UVC-LED technology.
• To address the need for precise power delivery required by UVC-LEDs for efficient germicidal action.

Main Methods:

• Design of a power electronic converter tailored for UVC-LED arrays.
• Implementation and testing of the converter system.
• Focus on precise power supply control for optimal UVC-LED performance.

Main Results:

• Successful design and implementation of a power electronic converter for 254 nm UVC-LEDs.
• The developed system provides the precisely dosed power supply necessary for effective UVC-LED decontamination.
• The technology is suitable for applications targeting SARS-CoV-2 inactivation.

Conclusions:

• The developed power converter facilitates the use of 254 nm UVC-LEDs for germicidal applications.
• This mercury-free solution offers a viable alternative for disinfection, including against SARS-CoV-2.
• Precise power management is crucial for maximizing the efficacy of UVC-LED decontamination systems.