Water-cooled heat sink for modular series connection type high-voltage frequency converter

Abstract

The invention discloses a water-cooled heat sink for a modular series connection type high-voltage frequency converter water-cooled heat sink. The water-cooled heat sink for the modular series connection type high-voltage frequency converter comprises a modular series connection type high-voltage frequency converter body, wherein a low-voltage power module series partial voltage topological structure is adopted in a main circuit of the modular series connection type high-voltage frequency converter body, a water-cooled heat sink is arranged in the modular series connection type high-voltage frequency converter body, the water-cooled heat sink is mainly composed of multiple independent heat dissipation substrates and a water-cooling plate embedded with a waterway channel, the water-coolingplate is made from a novel insulating heat conductive material, a water inlet, a water outlet and a mounting hole are formed in the back of the water-cooling plate, and the water-cooling plate is fastened and connected with a frequency converter shell by virtue of a bolt. The water-cooled heat sink for the modular series connection type high-voltage frequency converter has the beneficial effects of simple structure and strong practicability.

Description

technical field [0001] The invention relates to the application field of industrial automation, in particular to a water-cooled radiator of a module series-connected high-voltage frequency converter. Background technique [0002] With the continuous improvement of industrial automation, high-voltage frequency converters are widely used in various industrial production fields. In order to further improve production efficiency and ensure production safety, people have put forward higher requirements for the performance of high-voltage frequency converters. Among them, the cooling capacity It has become one of the key performance manifestations of high-voltage inverters. Because the high-voltage inverter has the characteristics of high voltage level, high withstand voltage of components, and many internal modules, it will generate a certain amount of heat during operation. If the generated heat cannot be dissipated in time, the temperature of the power device will rise, resulti...

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Problems solved by technology

[0005] The high-voltage inverter has the characteristics of high voltage level, high withstand voltage of components, and many internal modules. The main circuit needs to use a power module with a high withstand voltage level. Ordinary radiators generally use a water-cooled system with a water channel embedded directly in the power module. Heat dissipation on the board or heat dissipation fins are installed on one side of the water-cooling plate, and the water-cooling plate is directly fixed on the inverter shell. In addition, the material of the water-cooling plate is generally copper plate or aluminum alloy plate. The device cannot guarantee the effective insulation between the power module and the ground, because the withstand voltage of the device is not enough to meet the technical performance requirements under the high voltage level, the current technical level is not enough to support the practical application of the low-voltage power module on the high-voltage inverter

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