Circulating heat radiation method of high-voltage frequency converter

Abstract

The invention discloses a circulating heat radiation method of a high-voltage frequency converter. All devices of the high-frequency converter are mounted in a box-shaped frequency conversion chamber, heat generated during work of the high-frequency converter is led out in the air exhausting form, air is cooled outside the frequency conversion chamber and then sent into the frequency conversion chamber to carry out cooling, and thus, circulating heat radiation is formed. The circulating heat radiation method is good in heat radiation effect, high in environmental adaptability and low in operation cost.

Description

technical field [0001] The invention mainly relates to the field of electrical equipment, in particular to a method for circulating heat dissipation of a high-voltage frequency converter. Background technique [0002] At present, frequency conversion and speed regulation technology has become increasingly mature, and high-voltage frequency converters are widely used because of their remarkable power-saving performance. High-voltage frequency converters are usually composed of switches, transformers, power units, cooling devices and control parts. The existing high-voltage frequency converters have the following technical problems: [0003] (1) The heat dissipation effect is poor and the environmental applicability is poor; the heat dissipation device of the traditional high-voltage inverter adopts the air duct type air-cooled external circulation distribution method, there is a lot of dust, and the filter is easy to block, which requires high cleanliness of the inverter room...

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Problems solved by technology

[0003] (1) The heat dissipation effect is poor and the environmental applicability is poor; the heat dissipation device of the traditional high-voltage inverter adopts the air duct type air-cooled external circulation distribution method, there is a lot of dust, and the filter is easy to block, which requires high cleanliness of the inverter room, so it is not suitable for dusty In factories or regions, if the air conditioner is used for auxiliary heat dissipation, the investment and maintenance costs will be greatly increased, and the air conditioner must also have an air inlet on the installation object of the high-voltage frequency converter, which makes it unsuitable for environments with high pollution and dust

[0004] (2) Large investment and large floor space; due to the large number of components in the high-voltage frequency converter, the traditional high-voltage frequency converter has the disadvantages of many cabinets and a large occupied area, so a special factory building must be used as the high-voltage frequency conversion room, which makes The use of high-voltage inverters is limited by space, so it is not suitable for situations where the workshop space is small or the inverter room cannot be built

In addition, the traditional high-voltage inverter is not easy to relocate after installation, and the relocation cost is relatively high

[0005] (3) High investment cost; when building a traditional high-voltage inverter room, high and low-voltage cables need to be laid in the cable trench. Therefore, civil engineering design and construction require a large workload, long time, and high investment costs.

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