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A Mixed Modulation Isolated Dual Output DC-DC Converter

A DC-DC, dual output technology, applied in output power conversion devices, regulating electrical variables, converting DC power input to DC power output, etc., can solve the problem of not reducing the cost of the converter, and reduce mutual influence. , reducing volume and loss, reducing the effect of current stress

Active Publication Date: 2019-10-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical content uses the dual-channel DC power input method to improve the comprehensive utilization of energy, but does not reduce the cost of the converter

Method used

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  • A Mixed Modulation Isolated Dual Output DC-DC Converter
  • A Mixed Modulation Isolated Dual Output DC-DC Converter
  • A Mixed Modulation Isolated Dual Output DC-DC Converter

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0054] A hybrid modulation isolated dual-output DC-DC converter, including a parallel half-bridge LLC resonant circuit and a phase-shifted full-bridge circuit; the primary side of the parallel LLC resonant circuit is a half-bridge circuit structure, and the secondary side is a full-wave rectifier circuit structure; the primary side of the phase-shifting full-bridge circuit is a full-bridge circuit structure, and the secondary side is a full-wave rectification structure; the diodes used are all power diodes.

[0055] Such as figure 1 As shown, the primary side circuit in...

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Abstract

The invention discloses a hybrid modulation isolation type dual-output DC-DC converter, comprising: an input power supply; a parallel half-bridge LLC resonant circuit, adopting a frequency modulation method to convert a DC input voltage into a relatively high DC output voltage, and the secondary side It is a full-wave rectifier circuit structure; a phase-shifted full-bridge circuit is connected between the two bridge arms of the parallel half-bridge LLC resonant circuit, and the DC input voltage is converted to a lower DC by adjusting the phase between the two bridge arms. Output voltage, the secondary side is a full-wave rectification circuit structure. The converter improves the independence and stability between the two outputs, and reduces the mutual influence between the two outputs. The converter realizes stable DC voltage output by controlling the output voltage; at the same time, the converter has a high-frequency transformer, which can realize electrical isolation.

Description

technical field [0001] The invention belongs to the field of power electronics, and in particular relates to a hybrid modulation isolation type dual output DC-DC converter. Background technique [0002] With the development of electric vehicles, communication technology and power systems, higher requirements are put forward for the performance, weight, volume, efficiency and reliability of electric vehicle chargers, switching power supplies for communication and power operation circuits. The power supply usually adopts DC power supply, for example, the electric vehicle charger outputs DC power supply to charge the battery. In some occasions, many electrical devices require two or even multiple DC power sources. For example, in an electric vehicle, while charging the power battery, it is necessary to supply power to other equipment of the vehicle. Traditionally, two independent power supply systems are used for this type of electrical equipment, which increases the cost and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/33561H02M3/33569H02M1/008H02M1/009Y02B70/10
Inventor 邓焰李广地夏晋王昆陈桂鹏
Owner ZHEJIANG UNIV
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