|Autors: Valchev V. C., Mareva D. J., Yudov D. D., Hinov, N. L.|
Title: Comparison of power converters for LED illuminants
Keywords: power converters, LED illuminants, PWM
Abstract: The purpose of the paper is to investigate the various modulation types for control of transformerless non-dimmable AC/DC/DC converters in nominal operation mode intended for LED illuminants. A combined PWM (pulse width modulation) is investigated. The optimal selection of power converter inductor core is considered. The derived results lead to conclusions for improvement of the power converter characteristics. Furthermore, the DC link capacitor is reduced without significant effect on circuit performance. It is proven that utilizing combined PWM would result in less current ripple and improved power factor. Utilization of nanocrystalline materials additionally reduces losses in the examined power converter.
1. Grigorova T.G., Vuchev A.S., Output and Control Characteristics of an LLC DC-DC Converter Operating above Resonant Frequency based on State Plane Analysis, 12th National Conference with International Participation, ELECTRONICA 2021, Sofia, 27 May 2021 through 28 May 2021 - 2021 - в издания, индексирани в Scopus или Web of Science
Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science