Frequency conversion power module of all-in-one machine of explosive-proof frequency conversion motor

Abstract

The invention provides a frequency conversion power module of an all-in-one machine of an explosive-proof frequency conversion motor. The frequency conversion power module comprises a rack, an IGBT (Insulated Gate Bipolar Translator) element, a direct current capacitor, a rectifier diode, a composite low-induction busbar, an alternating current laminated busbar, a drive circuit assembly, a control circuit assembly, a water-cooled heat sink, a discharge resistor, a soft high pressure water intake pipe, and a high pressure water exhaust pipe. A core element of a frequency converter core is a water-cooled power module integrated by the frequency conversion power module, and has a high power density. The core element can be disassembled entirely, and is convenient to maintain and replace in a mine. The frequency conversion power module is different from the prior art in that components in the power module are arranged in a distributed mode, and are not convenient to maintain and replace in the mine when the power module breaks down. According to the water-cooled heat sink, high pressure water drawn from the ground can be directly applied to carrying out the water cooling heat dissipation, thereby replacing the prior art that an independent set of circulating cooling water device is required in the mine. According to the frequency conversion power module, the cost is reduced, and the area and the volume of the equipment in the mine are saved. The power module provided by the invention is convenient to maintain and replace.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a frequency conversion power module of a frequency conversion motor integrated machine. Background technique [0002] At present, the high-power motors of mechanical equipment in coal mines generally adopt frequency conversion speed regulation, which can significantly improve the applicability of mechanical equipment to working conditions, thereby improving productivity and saving a lot of electric energy. [0003] However, due to environmental factors, the frequency converter equipment used in coal mines has many restrictions on heat dissipation technology. On the one hand, for the sake of safety, the down-converter in coal mine needs to seal all the electronic components and circuit equipment in the explosion-proof cavity. Let the heat out. Therefore, the heat dissipation technology in the flameproof frequency converter needs to be improved. [0004] At present, fl...

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Problems solved by technology

[0008] However, the cooling water in mines generally comes from the ground, and the water pressure reaching the equipment end is already extremely high, and the water quality cannot be guaranteed to be particularly good, so there are higher requirements for water-cooled power modules

[0009] However, the various components of the above-mentioned frequency converter core are distributed in the cavity, which is not convenient for downhole maintenance and replacement.

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