Ultrahigh-voltage step-down DC-DC converter based on switched capacitor and coupling inductor technology
A technology of DC-DC and coupled inductance, which is applied in the direction of adjusting electric variable, output power conversion device, converting DC power input to DC power output, etc. It can solve the problem of increasing the volume of the converter, reducing the conversion efficiency of the transformer, and the second stage Topological loss and other problems, to achieve the effect of improving energy conversion efficiency, reducing loss, and large device selection margin
Pending Publication Date: 2021-12-07
XI AN JIAOTONG UNIV
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[0007] For two-stage converters, there are many isolated and non-isolated topology designs, and they have been recognized by industry and academia, but there are significant defects: one is that the use of transformers increases the size of the converter. The second is that too many active switches make the loss of the second-level topology quite large, which reduces the conversion efficiency
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[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0030] The schematic diagrams of the structures according to the disclosed embodiments of th...
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The invention discloses an ultrahigh-voltage step-down DC-DC converter based on a switched capacitor and coupling inductor technology. The ultrahigh-voltage step-down DC-DC converter comprises a power supply, a first switch, a second switch, a third switch, a fourth switch, a fifth active switch, a sixth active switch, a seventh active switch, a first clamping capacitor, a second clamping capacitor, a first resonant capacitor, a second resonant capacitor, a load, a first coupling inductor and a second coupling inductor. The converter has the characteristics of small size, low loss and high conversion efficiency.
Description
technical field [0001] The invention relates to an ultra-high voltage step-down DC-DC converter, in particular to an ultra-high voltage step-down DC-DC converter based on switched capacitor and coupled inductance technology. Background technique [0002] Power electronics technology is an important supporting technology for national security and people's lives, and an important technical means to achieve energy conservation and environmental protection and improve people's quality of life. The degree of its use is an important indicator of a country's development. High-efficiency and high-quality power conversion is the ultimate goal of the development of power electronics technology. Based on the basic theory of switched capacitors and coupled inductors, the present invention designs a novel non-isolated ultra-high voltage step-down DC-DC converter for the power demand of data centers. [0003] With the rapid development of artificial intelligence, big data and cloud compu...
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Login to View More IPC IPC(8): H02M3/155
CPCH02M3/155Y02B70/10
Inventor 王来利于龙洋孙培元杨成子崔洪昌
Owner XI AN JIAOTONG UNIV