Abstract
Abstract: In this paper, a Double Frequency Buck Driver (DFBD) using SiC diodes for LED lighting systems is presented. This topology enhances the efficiency of the Double Frequency Buck Converter (DFBC) by minimizing the switching losses in power diode. The design procedure, mathematical equations and efficiency calculations of the DFBD are discussed. A prototype of the Conventional Buck Converter (CBC) with Si and SiC diode, DFBC with SiC diode and Si diode is implemented for 10W LED in hardware. Experimental results are presented for the four different topologies to imply that the efficiency of the system increases with SiC diodes. In addition, the cost analysis and energy savings for a multi-storeyed official building are estimated for the DFBC with SiC topology and validated with the other topologies.
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