High-power converter

Abstract

The invention discloses a high-power converter which structurally comprises a motor, a heat dissipation net, a conversion box, a host and a cabinet door, the motor and the host are matched in an electrical connection mode, the host is connected with the cabinet door and the conversion box, one side of the conversion box is connected with the heat dissipation net, the host comprises a cabinet body, a wind shield, a rotating shaft, a base pad, a power-assisted ball and an air duct, a wind shield is connected between the cabinet body and the conversion box through a rotating shaft, an air duct is connected in the wind shield, a base pad is connected to one side of the air duct, a power-assisted ball is arranged on the base pad, a side pressing device and a top separation structure are arranged on the power-assisted ball, and when the wind shield floats up and down at the corresponding gear along the wind, the wind shield firstly contacts with the middle of the stacking cylinder, so that the stacking cylinder is extruded to slide between the side pressure devices, and the side pressure devices are pushed to obliquely lean against the top separation structure and can be sleeved on the wind shield in a V shape, so as to maintain a better stable clamping and stopping state.

Description

technical field [0001] The invention relates to the field of high-power semiconductor devices, in particular, it is a high-power converter. Background technique [0002] The ITERPF converter power supply is the special power system with the largest power and the most complex operation mode in the world today. The rated current of a single converter is ±55kA, the rated voltage is ±1.05kV, and it can realize four-quadrant operation. There are 14 sets of four-quadrant converters in total. The power supply of the inverter supplies power to six PF superconducting coils, among which PF2-PF5, the power supplies of these four superconducting coils are composed of three four-quadrant high-power converters in series, and the starting pair of three high-power converters running in series The safe and reliable operation of the power supply is very important, and the existing high-power converters will have the following disadvantages: [0003] Generally, the heat dissipation air duct o...

AI Technical Summary

Problems solved by technology

[0003] Generally, the heat dissipation air duct of the power unit forms an air duct in the inner cavity of the cabinet body, and the air suction port of the heat dissipation box is facing the air duct, which can use the opening of the windshield part to attract convective air and improve the heat dissipation efficiency of the heat sink. After the convective wind slides and opens in the same direction and reaches the preset position, the windshield will still float up and down in the corresponding position along the wind, and rigidly collide with the air ducts on both sides, so that the corners of the windshield are damaged to varying degrees. Affecting the subsequent deployment cannot maintain a parallel state, resulting in poor convection cooling effect and reducing the ability of the overall equipment to operate stably

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