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A frequency converter with an overheat protection system

A technology of overheating protection and frequency converter, applied in the field of frequency converter, can solve the problems of easy damage of the main circuit of the frequency converter, temperature rise of the frequency converter, etc., and achieve the effect of avoiding different temperature thresholds

Inactive Publication Date: 2018-12-21
TAIZHOU LINGSHIDA ELECTRIC APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in summer, the ambient temperature is too high, which makes the temperature of the inverter rise, and the temperature can be as high as 80-90°C, which makes the main circuit of the inverter easy to be damaged. There is room for improvement.

Method used

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  • A frequency converter with an overheat protection system
  • A frequency converter with an overheat protection system
  • A frequency converter with an overheat protection system

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Embodiment Construction

[0069] The following is attached Figure 1-3 The present invention is described in further detail.

[0070] Such as figure 1 As shown, a frequency converter with an overheating protection system disclosed in this embodiment includes a main body of the frequency converter, a circuit integrated board installed inside the main body of the frequency converter and burned with a main circuit; it also includes: a temperature detection unit, a frequency converter quarter Temperature threshold database, quarter switching unit, CPU, comparison unit, execution unit.

[0071] Such as figure 1 As shown, the temperature detection unit is installed inside the main body of the inverter for real-time detection of the temperature at the integrated circuit board, and is recorded as T i . Inverter quarterly temperature threshold database, which is set with temperature reference values ​​in different quarters; it defines that the first quarter Q 1 (March to May) the seasonal temperature thres...

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Abstract

The invention discloses a frequency converter with an overheat protection system, relates to a frequency converter, and solves the problem that the main circuit of the frequency converter is easy to be damaged due to the temperature rise of the frequency converter in operation, The technical scheme comprises the following points: a temperature detecting unit, a frequency converter quarterly temperature threshold database provided with temperature reference values of different quarters, a quarterly switching unit for detecting the quarter in which the frequency converter is located in real timeand outputting the corresponding quarter number, a central processing unit, a comparison unit and an execution unit; The invention discloses a frequency converter with an overheat protection system.When the temperature at a main circuit is higher than a temperature threshold value, the execution unit immediately cuts off the loop where the main circuit is located, reduces the probability of burning out the main circuit under the condition of high temperature, and prolongs the service life of the frequency converter.

Description

technical field [0001] The invention relates to a frequency converter, in particular to a frequency converter with an overheat protection system. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. [0003] The inverter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit, micro-processing unit, etc. The frequency converter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, with the continuous improvement of industrial automation, Frequency converters are also widely used. [0004] The frequency converter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H5/04H02H7/12
CPCH02H5/045H02H7/1216
Inventor 谢继国谢继友陈明碟
Owner TAIZHOU LINGSHIDA ELECTRIC APPLIANCES
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