Isolated three-level bidirectional DC-DC converter with coupling inductor

A DC converter, bidirectional DC technology, applied in the conversion of DC power input to DC power output, regulating electrical variables, and output power conversion devices, etc., can solve problems such as large switching loss, large switching stress, and large output ripple. , to achieve the effect of reducing current ripple, symmetrical circuit structure, and increasing ripple frequency

Inactive Publication Date: 2016-07-06
XIAN XJ POWER ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional Buck/Boost type bidirectional DC-DC converter has been widely used due to its simple circuit structure, but the single power device has high withstand voltage, large switching stress, large switching loss, large output ripple and other technical shortcomings. The upper limit value of its further application
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  • Isolated three-level bidirectional DC-DC converter with coupling inductor
  • Isolated three-level bidirectional DC-DC converter with coupling inductor
  • Isolated three-level bidirectional DC-DC converter with coupling inductor

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Embodiment Construction

[0018] The present invention is described in further detail below in conjunction with accompanying drawing:

[0019] refer to figure 1 , the isolated three-level bidirectional DC-DC converter with coupled inductors of the present invention includes a high-voltage side input capacitor C1, a low-voltage side input capacitor C2, a high-voltage side power supply, a low-voltage side power supply, a first power switch tube V1, a second The second power switch tube V2, the third power switch tube V3, the fourth power switch tube V4, the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, and each other Coupled first coupling filter inductor L1 and second coupling filter inductor L2; the positive pole of the high voltage side power supply is connected to one end of the high voltage side input capacitor C1 and the collector of the first power switch tube V1, and the other end of the high voltage side input capacitor C1 It is connected with one end of the low-...

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Abstract

The invention discloses an isolated three-level bidirectional DC-DC converter with a coupling inductor. The isolated three-level bidirectional DC-DC converter comprises a high-voltage side input capacitor, a low-voltage side input capacitor, a high-voltage side power supply, a low-voltage side power supply, a first power switching tube, a second power switching tube, a third switching tube, a fourth power switching tube, a first diode, a second diode, a third diode, a fourth diode, a first coupling filter inductor, a second coupling filter inductor, wherein the first coupling filter inductor and the second coupling filter inductor are coupled to each other. The isolated three-level bidirectional DC-DC converter has the advantages of small output current ripple and low loss of switching tubes, and is also relatively simple in structure.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to an isolated three-level bidirectional DC-DC converter with coupled inductors. Background technique [0002] In the 21st century, the main source of energy for human beings still relies on the consumption of fossil energy. The massive development of this non-renewable energy not only threatens human beings with energy depletion, but also brings huge damage and harm to the environment in which human beings live. With the development of renewable energy such as solar energy and wind energy and the continuous innovation of conversion technology, the research and application of renewable energy in countries around the world are becoming more and more mature. Among them, the DC-DC converter used in electric energy conversion technology plays an important role in energy storage, exchange and conversion. In different applications, the input and output ripple of the DC-DC converter and the bidirection...

Claims

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Application Information

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IPC IPC(8): H02M3/155H02M1/14
CPCH02M3/155H02M1/14
Inventor 郎学斌孟向军牛化鹏张海龙姚为正
Owner XIAN XJ POWER ELECTRONICS TECH
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