Hybrid-modulation isolation-type double-path output DC-DC convertor

A DC-DC, dual output technology, which is applied in the direction of output power conversion device, adjustment of electric variable, DC power input conversion to DC power output, etc., can solve the problem of not reducing the cost of the converter, and reduce the mutual influence , enhance the stability of the circuit, reduce the effect of loss

Active Publication Date: 2018-08-03
ZHEJIANG UNIV
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The technical content uses the dual-channel DC power input method to improve the

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  • Hybrid-modulation isolation-type double-path output DC-DC convertor
  • Hybrid-modulation isolation-type double-path output DC-DC convertor
  • Hybrid-modulation isolation-type double-path output DC-DC convertor

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[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0054] A hybrid modulation isolation type 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-shifted full-bridge circuit is a full-bridge circuit structure, and the secondary side is a full-wave rectifier structure; the diodes used are all power diodes.

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

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Abstract

The invention discloses a hybrid-modulation isolation-type double-path output DC-DC convertor. The convertor comprises an input power supply, a parallel-connection half-bridge LLC resonance circuit and a phase-shift full-bridge circuit; a frequency modulation mode is adopted for converting direct-current input voltage into high direct-current output voltage, and a sub edge is of a whole-wave rectification circuit structure; the phase-shift full-bridge circuit is connected between two bridge arms of the parallel-connection half-bridge LLC resonance circuit, a mode of adjusting the phases of thebridge arms is adopted for converting direct-current input voltage into low direct-current output voltage, and a sub edge is of a whole-wave rectification circuit structure. According to the hybrid-modulation isolation-type double-path output DC-DC convertor, the independence and stability between output of two circuits are improved, and mutual influence of output of two circuits is reduced. Theconvertor controls the output voltage, and stable direct-current voltage output is achieved; meanwhile, the convertor is provided with a high-frequency transformer, and electrical isolation can be achieved.

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 ...

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Application Information

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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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