Intelligent adjustment heat dissipation method and system for high-voltage frequency converter

Abstract

The invention discloses an intelligent adjustment type heat dissipation method and system for a high-voltage frequency converter. The intelligent adjustment type heat dissipation method for the high-voltage frequency converter comprises the steps that (1) a temperature signal of an IGBT is detected in real time, and the temperature signal of the IGBT is converted into a digital signal to be output after shaping and filtering are conducted on the temperature signal; (2) the temperature signal of the IGBT is received and is judged, and when the temperature value is smaller than a preset smallest temperature value, a radiator is controlled to operate at a preset lowest operation frequency; when the temperature value is larger than a preset largest temperature value, the radiator is controlled to operate at a preset highest operation frequency; when the temperature value is between the preset largest temperature value and the preset smallest temperature value, the target operation frequency of the radiator is calculated, and the radiator is controlled to operate at the target operation frequency. The intelligent adjustment type heat dissipation system for the high-voltage frequency converter comprises a first module used for detecting the temperature signal of the IGBT in real time and a second module used for controlling the radiator to operate. The intelligent adjustment type heat dissipation method and system for the high-voltage frequency converter have the advantages that the method is easy to realize, energy consumption is small, the utilization rate of heat dissipation power is high, the noise is low, and intelligent adjustment can be achieved.

Description

technical field [0001] The invention relates to the field of high-voltage frequency converters, in particular to an intelligent heat dissipation method and system for high-voltage frequency converters. Background technique [0002] In the field of high-voltage inverters, due to the high power of the equipment, take the unit cascaded high-voltage inverter as an example, it is generally MW level, and its efficiency can generally reach 95-97%. It usually generates a lot of heat during normal operation. In order to ensure the normal operation of the equipment, a large amount of heat must be dissipated through the cooling system. [0003] In the actual working conditions of high-voltage inverters, the redundancy factor for motor selection is usually very large, and the general operating load is set to 60% to 80% of the rated load of the motor, and the capacity of the matching high-voltage inverter is generally It is larger than the rated power of the motor, so the heating power ...

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Problems solved by technology

[0004] (1) Since the cooling fan of the high-voltage frequency converter will produce very loud noise when running at full speed, it will cause great harm to the staff who have been debugging and maintaining the equipment for a long time. The staff must wear anti-noise sheaths for protection

[0005] (2) The high-voltage inverter cooling fan runs at full speed for a long time, which will reduce the dust-proof effect of the air inlet, and even cause dust to block the air inlet, thereby reducing the cooling power

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