DC-DC converter topological structure
A technology of DC-DC and topology structure, applied in the direction of converting DC power input to DC power output, instrumentation, and adjusting electrical variables, etc., which can solve problems such as difficult replacement, many failures of power modules, and difficult expansion
Inactive Publication Date: 2021-06-11
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology
However, the power modules of the current DC-DC converter topology have disadvantages such as many faults, difficult replacement, difficult expansion, and long power outage time.
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[0025] 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, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0026] figure 1 It is a schematic circuit diagram of the DC-DC converter topology proposed by the embodiment of the present invention. Such as figure 1 As shown, the DC-DC converter topology 100 includes:
[0027] The input terminal 101 is used to receive a DC input voltage;
[0028] A plurality of power modules 102 connected in parallel, used to transform the DC input voltage;
[0029] an output terminal 103, configured to output a DC output voltage after passing through a plurality of power modules 102;
[...
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The invention discloses a DC-DC converter topological structure. The DC-DC converter topological structure comprises: an input end used for receiving a DC input voltage; a plurality of power modules connected in parallel and used for converting the DC input voltage; and an output end used for outputting direct current output voltage passing through the plurality of power modules. Each of the plurality of power modules connected in parallel comprises a first input end, a second input end, a first output end and a second output end, the first input end is connected with the first direct-current bus through a first switch, the second input end is connected with a first zero line through a second switch, the first output end is connected with the second direct-current bus through a third switch, and the second output end is connected with a second zero line through a fourth switch, so that the power module can be replaced and expanded without power failure, the power failure in the operation process of the DC-DC converter is ensured, and the power supply reliability is improved.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of power supply converters, in particular to a DC-DC converter topology. Background technique [0002] With the increasing application of power electronic devices and the rapid development of electronic device technology and its control technology, there are more possibilities for the grid structure of AC and DC distribution networks, moving towards a smarter, more efficient and more direct way develop. At present, the DC-DC converter topology technology continues to mature, and the number of demonstration projects using DC-DC converter topology equipment continues to increase. Because the DC-DC converter topology has flexible control, energy bidirectional flow, energy It is popular because of its high conversion efficiency. With the continuous improvement of the requirements of green economy, energy saving and emission reduction, it has become the general trend to make full use of cl...
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IPC IPC(8): H02M3/335
CPCH02M3/3353
Inventor 陈盛燃何建宗夏云峰钟荣富黄匀飞张永康薛峰赵树宏
Owner GUANGDONG POWER GRID CO LTD