Chapter 4 . High Frequency LLC Resonant Converter
نویسنده
چکیده
With the development of power conversion technology, power density becomes the major challenge for front-end AC/DC converters. Although increasing switching frequency can dramatically reduce the passive component size, its effectiveness is limited by the converter efficiency and thermal management. In present industry implementations, due to the low efficiency PWM type topologies, DC/DC stage switching frequency is limited to 100 kHz range. Therefore, passive components take large portion of converter volume. As shown in Figure 4-1, DC/DC stage transformer and inductor take more than 30% for total converter space.
منابع مشابه
LLC Resonant Converter: Analysis and Design
Inductor Inductor Capacitor (LLC) resonant converter has gained attention of researchers and engineers these days High efficiency, power density and Reliability. LLC resonant converter is most suitable resonant converter for front end DC-DC applications. Integrated magnetic, ZVS and high frequency operation, make the converter more compact and efficient. In this paper brief analysis of the LLC ...
متن کاملSmall Signal Analysis for LLC Resonant Converter
− In this paper, small signal characteristic of a LLC resonant converter is analyzed. LLC resonant converter was been reported in many papers recently because of its simple structure, high efficiency and high switching frequency capability. In order to make practical use of this topology, understanding its small signal characteristic is essential to design the control loop. For PWM converter, s...
متن کاملPerformance Analysis of LLC-LC Resonant Converter Fed PMDC Motor
In this paper, a modified form of the most efficient resonant LLC series parallel converter configuration (SPRC) is proposed. The proposed system comprises of an additional LC circuit synchronized along with the existing resonant tank of LLC configuration (LLC-LC configuration). With the development of power electronics devices, resonant converters have been proved to be more efficient than con...
متن کاملPerformance Analysis of Modified LLC Resonant Converter
In this paper a modified form of the most efficient resonant LLC series parallel converter configuration is proposed. The proposed system comprises of an additional LC circuit synchronized with the existing resonant tank of LLC configuration (LLC-LC configuration). With the development of power electronics devices, resonant converters have been proved to be more efficient than conventional conv...
متن کاملDesign Considerations for an LLC Resonant Converter
Recently, the LLC resonant converter has drawn a lot of attention due to its advantages over the conventional series resonant converter and parallel resonant converter: narrow frequency variation over wide load and input variation and Zero Voltage Switching (ZVS) of the switches for entire load range. This paper presents an analysis and reviews practical design considerations for the LLC-type r...
متن کامل