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Isolated integrated three-port bidirectional DCDC converter

A three-port, isolated technology, applied in the direction of converting DC power input to DC power output, instrumentation, and adjusting electrical variables, etc.

Active Publication Date: 2020-01-03
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] On the premise of realizing the function of three-port energy bidirectional transmission, in order to ensure a high overall work efficiency, the existing improvement measures of the active bridge converter have certain limitations, so a new improved topology is urgently needed to solve the problem. Realize bidirectional transmission of three-port energy with high efficiency

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  • Isolated integrated three-port bidirectional DCDC converter
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  • Isolated integrated three-port bidirectional DCDC converter

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. For the experimental methods without specific conditions indicated in the following examples, the conventional conditions or the conditions suggested by the manufacturer are usually followed.

[0042] Such as figure 1 As shown, the isolated integrated three-port bidirectional DCDC converter of this embodiment includes three input / output terminals V 1 , V 2 , V 3 , two input / output filter capacitors C 2 、C 3 , a first input / output inverter / rectifier network 1, a second input / output three-half-bridge inverter / rectifier network 2, a third input / output inverter / rectifier network 3, two resonant inductors L r1 and L r2 , three resonant capacitors C r1 、C r2 、C r3 , an integrated tran...

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Abstract

The invention discloses an isolated integrated three-port bidirectional DCDC converter, which comprises an integrated transformer T, a port I, a port II and a port III. The integrated transformer T comprises a magnetic core of the integrated transformer T, a port I side winding Np1, two port II side windings NP21 and NP22, and a port III side winding NP3. The magnetic core of the integrated transformer T comprises three magnetic columns, namely, a first magnetic column, a middle column and a second magnetic column. The port I side winding Np1 and the port II side winding NP21 are both wound onthe first magnetic column and the second magnetic column, and the port II side winding NP22 and the port III side winding NP3 are both wound on the middle column. The isolated integrated three-port bidirectional DCDC converter can realize bidirectional transmission of energy of three ports. When any two ports transmit energy, the third port can realize on-load and no-load operation. Meanwhile, the topology enables the number of transformers to be only one through a magnetic integration mode, and the realization of high efficiency and high power density is facilitated.

Description

technical field [0001] The invention relates to the technical field of power electronic converters, in particular to an isolated integrated three-port bidirectional DC-DC converter. Background technique [0002] With the increasing problems of environmental pollution and energy shortage, people pay more and more attention to the use of clean energy, and many countries have begun to vigorously develop and promote the use of new energy vehicles. In order to improve the portability of charging new energy vehicles, many car manufacturers have put forward requirements for power supply companies on-board chargers and low-voltage and high-current DCDC converters in vehicles. In order to further reduce the volume of the in-vehicle power converter and increase the overall power density, a power electronic converter that can integrate the on-board charger with the in-vehicle low-voltage, high-current DCDC converter is needed. [0003] Based on the traditional active bridge converter,...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/3353Y02B70/10
Inventor 马皓高祎韩
Owner ZHEJIANG UNIV
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