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DC/DC converter circuit topological structure

A circuit topology and converter technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of low efficiency and achieve the effect of single working mode, improved efficiency and reduced loss

Inactive Publication Date: 2020-05-29
CSSC SYST ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the DC / DC boost converter works in the state of high boost ratio, and there is a problem of low efficiency.

Method used

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  • DC/DC converter circuit topological structure
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  • DC/DC converter circuit topological structure

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Embodiment Construction

[0019] The DC / DC converter circuit topology of the present invention includes the input power supply V in , power switch tube S, coupling inductor primary inductance L 1 , Coupled inductor secondary inductance L 2 , Coupled inductor leakage inductance L k , Diode D 1 , Diode D 2 , Diode D 3 , Diode D 4 , capacitance C 1 , capacitance C 2 , output filter capacitor C o , Output filter inductance L o and output load R. The gate of the power switch tube S is connected to the control signal voltage V gs , the drain of the switch tube S is connected to the input voltage V in , the source is connected to the primary side of the coupled inductor. Through the different working modes of the coupling inductor during the working process of the circuit topology, the charging and discharging of the bootstrap capacitor and the energy recovery and utilization of the leakage inductance of the converter, while realizing the high voltage gain of the converter, the loss of the convert...

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Abstract

The invention discloses a DC / DC converter circuit topological structure. On the basis of different working modes of a coupling inductor in the working process of the topological structure, the charging and discharging of a bootstrap capacitor and the leakage inductance energy recycling of a converter, the high-voltage gain of the converter is achieved, meanwhile, the loss of the converter is reduced, and the efficiency of the converter is improved. In addition, the topological structure of the invention is simple in circuit structure, adopts a small number of used components, has a single working mode, is low in device voltage stress and is suitable for a boost converter system between the output side of a fuel cell and standard direct-current bus voltage.

Description

technical field [0001] The invention belongs to the technical field of high-frequency switching converters, and in particular relates to a DC / DC converter circuit topology. Background technique [0002] With the continuous progress of society and rapid economic development, global energy consumption is increasing, and the amount of fossil energy storage is decreasing. In addition, environmental problems such as air pollution caused by the combustion of fossil energy have begun to affect people's daily life, threatening human survival and natural ecological security. With the continuous development of science and technology and the continuous popularization of concepts such as green and environmental protection, many new renewable and clean energy sources such as wind energy, solar energy, and biomass energy have been developed and utilized by humans. New energy technologies are developing rapidly and gradually replacing fossil fuels. energy. In addition, with the developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
CPCH02M3/07
Inventor 张智杰杨森孙科孙曦冉张宏伟蔡道萌蔡宗举杜会卿张滨刘玉明杨杰苗春晖
Owner CSSC SYST ENG RES INST
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