Auxiliary filtering cabinet

A technology for auxiliary filter cabinets and filter cabinets, which is applied in the direction of output power conversion devices, electrical components, and structural parts of conversion equipment, etc. It can solve the problems of large heat dissipation, bulky filter cabinets, and low stability and reliability of circuit structures. problems, to achieve the effect of improving stability and reliability and reducing volume

Inactive Publication Date: 2013-12-04
DATONG ELECTRIC LOCOMOTIVE OF NCR
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  • Summary
  • Abstract
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Problems solved by technology

Many existing filter cabinets use the form of transformers and three-phase capacitors together. Since the heat dissipation of the circuit structure of transformers and three-phase capacitors is generally very large, the existing filter cabinets need to use auxiliary fans to help them dissipate heat. The volume of the cabinet is huge, and the stability and reliability of its circuit structure are not high, and further improvement is needed

Method used

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Embodiment Construction

[0023] 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 with reference to the accompanying drawings and examples.

[0024] The auxiliary filter cabinet of the present invention can be applied to fields such as railway locomotives and EMUs, that is, auxiliary filter cabinets matched with auxiliary converters.

[0025] figure 1 It is a structural schematic diagram of the auxiliary filter cabinet of the present invention. figure 2 It is a schematic diagram of the cabinet structure of the auxiliary filter cabinet of the present invention. image 3 It is a schematic diagram of the principle of the auxiliary filter cabinet of the present invention. Figure 4 It is the matlab simulation schematic diagram of the three-phase inverter of the present invention. Figure 5 It is a schematic diagram of the phase voltage waveform of the present invention. Combine now Figure ...

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Abstract

The invention discloses an auxiliary filtering cabinet. The auxiliary filtering cabinet comprises N reactors, N capacitors, a cabinet body and a cabinet door, wherein the cabinet door and the cabinet body are connected to form a cavity which is used for containing the N reactors and the N capacitors, the N is a natural number which is larger than one, the cabinet body comprises N-1 separating plates, and the cavity is divided into N sub-cavities by the separating plates, and each reactor and each capacitor are installed in each sub-cavity. When the auxiliary filtering cabinet is adopted, the size of the auxiliary filtering cabinet can be reduced, and stability and reliability of the auxiliary filtering cabinet are improved.

Description

technical field [0001] The invention relates to auxiliary converter technology, in particular to an auxiliary filter cabinet. Background technique [0002] With the rapid development of power electronics technology for electric locomotives, auxiliary converters have been widely used, and the 380V level power supply harmonics output by auxiliary converters are very large. If there is no filtering device, the requirements for its power supply equipment are very high. Moreover, the auxiliary equipment has a high failure rate due to poor power supply quality. [0003] At present, the auxiliary filter cabinet is an important part of the auxiliary converter cabinet, and its reliability and stability directly determine the quality of the output power of the auxiliary converter. Many existing filter cabinets use the form of transformers and three-phase capacitors together. Since the heat dissipation of the circuit structure of transformers and three-phase capacitors is generally ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/12
CPCH02M1/12H02M7/003
Inventor 傅雪军邢亮杨帆
Owner DATONG ELECTRIC LOCOMOTIVE OF NCR
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