High-gain double-switch DC-DC converter

A DC-DC, double-switch technology, applied in high-efficiency power electronic conversion, conversion of DC power input to DC power output, instruments, etc., can solve problems such as low efficiency, large conversion loss, and complex control.

Inactive Publication Date: 2018-11-30
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a high-gain double-switch DC-DC converter, which solves the technical problems of large conversion loss, low efficiency and complex control of the existing high-gain DC-DC converter

Method used

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of 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 belong to the protection scope of the present invention.

[0035] see figure 2 , image 3 and Figure 4 , an embodiment of the present invention provides a high-gain dual-switch DC-DC converter, including: a DC power supply V in , inductance L, first switch tube module S 1 , the second switch tube module S 2 , the first diode D 1 , the second diode D 2 , the third diode D 3 , the fourth diode D 4 , the first capacitance C 1 , the second capacitance C 2 , the third capacitor C 3 and DC load R.

[0036] The...

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Abstract

The invention discloses a high-gain double-switch DC-DC converter. The high-gain double-switch DC-DC converter comprises a direct-current power supply, an inductor, a first switching tube module, a second switching tube module, a first-second diode, a second-second diode, a third-second diode, a fourth-second diode, a first capacitor, a second capacitor, a third capacitor and a direct-current load. The gain of the high-gain double-switch DC-DC converter is (2-2D)/(1-2D), high gain can be achieved at low duty ratio, and the problem of low conversion efficiency caused by high switching loss caused by high duty ratio of a traditional Boost converter is solved. In addition, the two switching tube modules in the high-gain double-switch DC-DC converter have the same gate control signal, the control is simple, the technical problems that an existing high-gain DC-DC converter has high transmission loss, low efficiency and complex control are solved, and the practical application value is better.

Description

technical field [0001] The invention relates to the technical field of DC-DC converters, in particular to a high-gain double-switch DC-DC converter. Background technique [0002] As energy and environmental problems become more and more serious, the development and utilization of new energy sources has become a research hotspot. Among them, due to the low output voltage of photovoltaic cells and fuel cell power generation systems, DC-DC converters in new energy systems are often required to have high boost gains. [0003] Traditional high-gain DC-DC converters are often obtained by cascading DC-DC converters. The circuit diagram of a traditional cascaded DC-DC converter is shown in figure 1 As mentioned above, the power of this type of converter is transmitted through two or even multiple stages, the control is complicated, the transmission loss is large, and the efficiency is low. Therefore, the technical problems of large conversion loss, low efficiency and complicated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M3/158H02M1/0054Y02B70/10
Inventor 张桂东郑培伟王志洋陈思哲章云
Owner GUANGDONG UNIV OF TECH
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