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Method for diagnosing heat radiation system

A technology of heat dissipation system and diagnosis method, which is applied to liquid variable capacity machines, thermometers that give difference values, measuring devices, etc., and can solve problems such as unpredictable heat dissipation system problems, inverter shutdown, loss, etc.

Active Publication Date: 2011-09-21
SCHNEIDER TOSHIBA INVERTER EUROPE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] However, since there is currently no way to diagnose the cooling system, it is impossible to predict when the cooling system will fail, thus causing irreparable and unnecessary losses due to unprepared downtime due to overheating
[0008] For example, in textile industry applications, the heat dissipation effect may be reduced due to fibers or filaments in the application environment blocking the radiator or fan, and the inverter will stop.

Method used

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  • Method for diagnosing heat radiation system
  • Method for diagnosing heat radiation system
  • Method for diagnosing heat radiation system

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Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be pointed out here that although the present invention is described by taking the power module of a frequency converter as an example, the present invention is by no means limited to frequency converters, but can be applied to any occasion that uses a cooling system for cooling.

[0034] Before describing the diagnosing method of the cooling system of the present invention, the definition of some parameters is given earlier:

[0035] P: The total power or heat dissipation rate of heat dissipation, or the power loss of electrical equipment, in W, indicating the rate of heat dissipated by electrical components during the working process. It can also be called the power loss of electrical equipment, because the power lost by electrical equipment will become heat, and this part of the heat is the total power that needs to be dissipated. For ...

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Abstract

The invention discloses a method for diagnosing a heat radiation system, comprising the steps of obtaining a temperature value related to a heat resistance value during the normal working of the heat radiation system, figuring out a temperature value related to a designed ideal heat resistance value according to a mathematical model of the system by using the power loss of the system; comparing the obtained value with the calculated value; and determining that the heat radiation system works abnormally if the difference between the obtained value and the calculated value exceeds a preset threshold. Therefore, by using the method disclosed by the invention, the working status of the heat radiation system can be determined in advance so that maintenance and repairing are arranged for the heat radiation system according to working.

Description

technical field [0001] The present invention relates to a method of diagnosing a cooling system, and more particularly to a simple method for detecting failures of the cooling system in preparation for maintenance and renewal of the cooling system. Background technique [0002] Thermal management is becoming increasingly important as heat dissipation from power electrical equipment increases and overall form factors decrease. [0003] The performance reliability and life of power electrical equipment are inversely proportional to the temperature of each device. Typically, the relationship between reliability and operating temperature of a silicon semiconductor device indicates that a decrease in temperature corresponds to an increase in reliability and lifetime of the semiconductor device. Therefore, increased lifetime and increased reliability of each device can be achieved by effectively controlling the operating temperature of the device. Therefore, it is generally nece...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00G01K3/08F04B51/00
Inventor 菲利普·鲍德森
Owner SCHNEIDER TOSHIBA INVERTER EUROPE SAS
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