Single-phase inverter circuit

A single-phase inverter and circuit technology, applied in the electrical field, can solve problems such as large stray inductance, and achieve the effects of reducing stray inductance, facilitating maintenance, and improving reliability

Inactive Publication Date: 2014-07-09
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a single-phase inverter circuit, which is used to solve the problem of large stray inductance of the single-phase inverter circuit in the prior art, reduce the stray inductance of the circuit, and reduce the generation of peak voltage

Method used

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Embodiment Construction

[0018] figure 1 A schematic structural diagram of a single-phase inverter circuit provided by an embodiment of the present invention, figure 2 The perspective view of the composite busbar in the single-phase inverter circuit provided by the embodiment of the present invention, image 3 The front view of the composite busbar in the single-phase inverter circuit provided by the embodiment of the present invention, Figure 4 The left view of the composite busbar in the single-phase inverter circuit provided by the embodiment of the present invention, Figure 5 The top view of the composite busbar in the single-phase inverter circuit provided by the embodiment of the present invention. Such as Figure 1 to Figure 5 As shown, the specific structure of the single-phase inverter circuit is as follows: it includes a set of power devices, energy storage devices, discharge resistors and composite busbars.

[0019] The composite busbar includes busbars, terminals and connecting part...

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Abstract

The invention provides a single-phase inverter circuit which comprises a set of power devices, an energy storage device, a discharging resistor and a composite busbar. The composite busbar comprises busbar bodies, terminals and connecting portions, the busbar bodies are flat, at least two busbar bodies are overlapped, and the space between adjacent busbar bodies is filled with high-insulating-strength material, so that the adjacent busbar bodies are insulated. The terminals are arranged on the busbar bodies and used for being connected with a circuit device, and the connecting portions are arranged on the busbar bodies and used for being connected with a direct-current input end, a direct-current output end or the circuit device. The composite busbar at least comprises a first busbar body, a second busbar body and a third busbar body, the first busbar body is connected with the positive pole of the direct-current input end, the second busbar body is connected with the negative pole of the direct-current input end, and the third busbar body is connected with an alternating-current output end. The single-phase inverter circuit can lower stray inductance and reduce peak voltages.

Description

technical field [0001] The invention relates to electrical technology, in particular to a single-phase inverter circuit. Background technique [0002] The operating system of an electric locomotive mainly includes traction system and auxiliary system, among which the traction auxiliary converter is an important device to ensure the electric locomotive to achieve electric traction, braking and auxiliary supply, and determines the stability of the high-speed operation of the electric locomotive. [0003] At present, the electrical connection of the key components in the single-phase inverter circuit in the traction auxiliary converter, such as the insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), the supporting capacitor and the absorbing capacitor, is usually connected by cables or copper bars to connect. In the working state of the traction auxiliary converter, due to the inductance of the IGBT itself and the parasitic inductance on the DC bus con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/48H02M1/32
Inventor 张丹牛勇王雷屈志强
Owner CRRC YONGJI ELECTRIC CO LTD
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