Modularized parallel connection combined type full bridge DC converter

A DC converter and combined technology, applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc., can solve the problems of equipment flexibility and scalability, and improve the degree of modularization and standardization. level, increased flexibility, increased power density

Inactive Publication Date: 2016-09-28
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the capacity of the equipment is to be changed, the controller and drive circuit of the system need to be redesigned, and the flexibility and scalability of the equipment will be affected

Method used

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  • Modularized parallel connection combined type full bridge DC converter
  • Modularized parallel connection combined type full bridge DC converter
  • Modularized parallel connection combined type full bridge DC converter

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0021] The invention provides a modular parallel combined full-bridge DC converter, which is characterized in that it includes a plurality of inverter modules and a plurality of rectification and filter modules corresponding to the inverter modules one by one. The main circuit of the inverter module includes: anti-reverse diodes, input filter capacitors, two-level or three-level H-bridges, output current-limiting inductors, etc. The main circuit of the rectifier filter module includes: diode rectifier bridge, output filter inductor, output filter capacitor, etc. The input terminals of multiple inverter modules are respectively connected to the input bus; the output terminals of multiple inverter modules are respectively connected ...

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Abstract

The invention provides a modularized parallel connection combined type full bridge DC converter, comprising a plurality of inversion modules and a plurality of rectification filtering modules which are in one-to-one correspondence with the inversion modules; input terminals of the plurality of inversion modules are electrically connected to an input bus; the output terminals of the plurality of inversion modules are connected to a primary side of a transformer; input terminals of the plurality of rectification filtering modules are connected to the auxiliary side of the transformer; and the output terminals of the plurality of rectification filtering modules are connected to an output bus. The invention targets the defects of the prior art and provides the modularized parallel connection combined type full bridge DC converter which realizes modularized design of a DC converter and flexible expansion in capacity and improves power supply reliability and redundancy of the device.

Description

technical field [0001] The invention belongs to power electronic electric energy conversion technology, in particular to a modularized parallel combined full-bridge DC converter. Background technique [0002] Large-capacity DC conversion devices are widely used in the fields of ship integrated power, high-speed electric railway, urban rail transit, and AC-DC hybrid microgrid. Limited by the power level of the existing fully-controlled power electronic devices, large-capacity DC converters face a certain development bottleneck in terms of system capacity expansion. In order to break through the limitation of the power level of the switching tubes on the capacity of the device, a common method is to use multiple switching tubes in parallel, so that the multiple switching tubes share the current on average. In the case of determining the power level of the system, the requirements for the power level of power electronic devices can be reduced by using parallel expansion techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33523
Inventor 肖飞刘计龙范学鑫王瑞田李超然杨国润陈伟
Owner NAVAL UNIV OF ENG PLA
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