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Multi-Stage DC-DC Converter Using Active LC2D Network With Minimum Component
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DOI：10.1109/TCSII.2020.3021609.png)
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A multi-stage ultra-gain converter using minimum component including a single semiconductor switch is proposed. The proposed converter is formulated using an active inductor-capacitor-two diodes (LC2D) network. The basic structure of the converter called as a cubic gain converter is formulated using twelve components including a semiconductor switch. The operation of the converter is discussed for continuous and discontinuous modes of operations. The converter performance due to the parasitic elements is discussed, and the SiC-based semiconductor devices are selected to reduce the effect of parasitic elements. A 250 W, 50 kHz cubic gain converter prototype is made and the test results are recorded. The results prove that the operation of the cubic gain converter in low duty ratio helps to attain 91.6% efficiency. The proposed structure of the n-stage and the detailed analysis of the cubic gain converter are the major novelties and contributions of this brief.
Keyword:
DC-DC converter
multi-stage DC-DC converters
high gain
quadratic converter
transformerless converters
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8.8K
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