Abstract
In this paper, an efficient inductively coupled medium pressure source for ultraviolet radiation (UV-source) is demonstrated. The lamp was operated with powers up to 3 kW while the radiation and the coldest point temperature were measured. In addition, different coil geometries were investigated. Here a symmetrical and asymmetrical winding density were compared. Also the operation pressures and DC to radiation efficiencies are presented. In this work, an operation pressure of one atmosphere and an UV-efficiency (200–380 nm) of 15.5% was achieved. This is comparable to conventional medium pressure Hg-lamp technology. The main advantage of the presented inductive lamp is the electrodeless operation and therefore the longer service life, since an electrode failure is eliminated.
Highlights
In many areas of radiation generation the LED is on the rise
It has already been demonstrated that efficient MHz inverters with high output power can be realized by using gallium nitride (GaN) [4]
The most efficient power to radiation efficiency was measured with 6.7% in the UVC range
Summary
In many areas of radiation generation the LED is on the rise. the LED is currently not suitable for all applications. The optimal frequency for electrodeless induction lamps with internal stray field couplers is between 2 and 3 MHz [2]. In this frequency range, a high plasma efficiency as well as a high radiation efficiency can be achieved. The commercialization of inductive medium pressure mercury plasma lamps has failed due to the need for efficient powerful electronic ballasts. Their development was primarily limited by the used transistors based on silicon (Si) semiconductors. It has already been demonstrated that efficient MHz inverters with high output power can be realized by using gallium nitride (GaN) [4]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
