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System abnormal operation processing method and processing device and computer readable storage medium

A technology for abnormal operation and processing methods, which is applied in the direction of output power conversion devices, electrical components, AC power input conversion to AC power output, etc., and can solve problems such as damage to power semiconductor devices

Inactive Publication Date: 2020-12-01
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Power electronic converters are designed with the worst protection measures for the safe working area of ​​power semiconductor devices. When the system occurs under the worst irreversible working conditions, the protection outputs abnormal signals, the system stops running, and some stress impacts on system failures may cause power electronic conversion. The power semiconductor device in the device is permanently damaged

Method used

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  • System abnormal operation processing method and processing device and computer readable storage medium
  • System abnormal operation processing method and processing device and computer readable storage medium
  • System abnormal operation processing method and processing device and computer readable storage medium

Examples

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Embodiment 1

[0057] like figure 1 As shown, the embodiment of the first aspect of the present invention proposes a system abnormal operation processing method, including:

[0058] Step S102, periodically acquiring parameter data;

[0059] Step S104, determining the comparison result between the parameter data in the current cycle and the parameter data in the previous cycle;

[0060] Step S106, outputting a control signal according to the comparison result.

[0061] The system abnormal operation processing method provided in this embodiment first obtains the parameter data periodically, then determines the comparison result between the parameter data in the current cycle and the parameter data in the previous cycle, and then outputs the corresponding control signal according to the comparison result . Specifically, in order to improve the accuracy of the detection process, or to ensure that the operating state of the system is detected in real time, it is necessary to obtain parameter d...

Embodiment 2

[0066] On the basis of Embodiment 1, the system abnormal operation processing method includes:

[0067] like figure 2 As shown, step S202, periodically obtain parameter data;

[0068] Step S204, determining the difference between the parameter data in the current cycle and the parameter data in the previous cycle;

[0069] Step S206, outputting a control signal according to the difference.

[0070] The step of determining the comparison result between the parameter data in the current period and the parameter data in the previous period specifically includes: determining the difference between the parameter data in the current period and the parameter data in the previous period.

[0071] In this embodiment, it is specifically defined that the comparison result between the parameter data in the current cycle and the parameter data in the previous cycle is realized by determining the difference between the parameter data in the current cycle and the parameter data in the pre...

Embodiment 3

[0087] like Figure 4 As shown, on the basis of Embodiment 1 and Embodiment 2, the system abnormal operation processing method includes:

[0088] Step S402, determine that the difference is greater than a first preset threshold, and output a first control signal.

[0089]The step of outputting a control signal according to the comparison result specifically includes: outputting a first control signal after determining that the difference is greater than a first preset threshold.

[0090] In this embodiment, even when the system is running stably, the parameter data of the system will change slightly. If the first statistical value and the second statistical value change to remind the staff to handle or perform self-processing, it will obviously increase Unnecessary adjustment process increases the burden on the system. Therefore, in the present invention, it is determined whether the difference between the first statistical value and the second statistical value is greater t...

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Abstract

The invention provides a system abnormal operation processing method and processing device and a computer readable storage medium. The method comprises the steps of: periodically obtaining parameter data; determining a comparison result of the parameter data in a current period and the parameter data in a previous period; and outputting a control signal according to the comparison result. According to the method, the parameter data are periodically acquired, and the parameter data in the current period are compared with the parameter data in the previous period; and therefore, a system can beeffectively prevented from triggering the worst protection measures, the abnormality of the system can be timely processed, the permanent damage of a power semiconductor device in a power electronic converter can be avoided, the fault rate of the system can be reduced, and the operation stability of the system can be improved.

Description

technical field [0001] The invention belongs to the technical field of frequency conversion equipment for air conditioners, and in particular relates to a system abnormal operation processing method, a system abnormal operation processing device and a computer-readable storage medium. Background technique [0002] Power electronic converters are designed with the worst protection measures for the safe working area of ​​power semiconductor devices. When the system occurs under the worst irreversible working conditions, the protection outputs abnormal signals, the system stops running, and some stress impacts on system failures may cause power electronic conversion. Permanent damage to power semiconductor devices in the device. Contents of the invention [0003] The present invention aims to solve one of the technical problems existing in the prior art or related art. [0004] In view of this, the first aspect of the present invention proposes a system abnormal operation pr...

Claims

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Application Information

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IPC IPC(8): H02M1/32H02M5/00
CPCH02M1/32H02M5/00
Inventor 刘翔许永锋
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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