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Dual-switch DC-DC converter

A DC-DC and converter technology, applied in the field of double-switch DC-DC converters, can solve the problems of high cost, low efficiency, complicated control, etc., and achieve the effect of solving high cost, reducing complexity and simple control

Inactive Publication Date: 2018-08-21
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a double-switch DC-DC converter, which solves the technical problems of high cost, low efficiency and complex control of the current high-gain DC-DC converter

Method used

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Embodiment Construction

[0034] The embodiment of the present invention provides a double-switch DC-DC converter, which solves the technical problems of high cost, low efficiency and complex control of the current high-gain DC-DC converter.

[0035] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following 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.

[0036] see figure 2 , image 3 and Figure 4 , an embodiment of the present invention provides an embodiment of a two-...

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Abstract

The invention discloses a dual-switch DC-DC converter, which comprises a DC power supply, an inductor, a first switch transistor module, a second switch transistor module, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a second capacitor and a third capacitor. The gain of the dual-switch DC-DC converter disclosed in the invention is 2 / (1-2D), high gain can be realized under a low duty cycle, the problem that high gain can not be realized as the traditional Boost converter can not work under a high duty cycle can be solved, the conduction loss of the switch transistor is reduced, the circuit efficiency is improved, and besides, two switch transistor modules in an impedance network DC-DC converter have the same switch signals, the control is simple, high gain can be realized without cascading, the complexity degree of the circuit structure is reduced, and the technical problems of high cost, low efficiency and control complexity of the current high-gainDC-DC converter can be solved.

Description

technical field [0001] The invention relates to the field of DC-DC converters, in particular to a double-switch DC-DC converter. Background technique [0002] With the development of power systems, more and more new energy systems are connected to the power grid, and new energy systems, especially photovoltaic and fuel cell systems, have higher and higher requirements for power electronics technology. Due to the low voltage characteristics of photovoltaic and fuel cell units, a high-gain DC-DC converter is often required to increase the voltage before it can be connected to the grid. [0003] The high-gain DC-DC converters used in the prior art often use cascaded DC-DC converters, which have high cost, low efficiency and complex control, which is not conducive to the effective utilization of new energy. The structure diagram of a traditional cascaded DC-DC converter is as follows: figure 1 As mentioned above, the cascaded circuit requires two-level or even multi-level cont...

Claims

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Application Information

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IPC IPC(8): H02M3/156
CPCH02M3/156
Inventor 王志洋陈思哲张桂东李惜玉章云
Owner GUANGDONG UNIV OF TECH