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Detection system for power module in modular electrical equipment

A technology for power modules and electrical equipment, which is applied in the field of power module detection systems and can solve problems such as low detection efficiency of multiple power modules

Active Publication Date: 2020-09-22
KEHUA DATA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a detection system for power modules in modular electrical equipment to solve the problem of low detection efficiency of multi-power modules in modular electrical equipment in the prior art

Method used

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  • Detection system for power module in modular electrical equipment
  • Detection system for power module in modular electrical equipment

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Embodiment 1

[0040] figure 1 A schematic structural diagram of a detection system for power modules in modular electrical equipment provided by an embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0041] Such as figure 1 As shown, the detection system 2 for the power module in the modular electrical equipment 1 provided by this embodiment includes: a control device 21 and an electrical signal sampling circuit 22;

[0042] The control device 21 is used to send a PWM signal to each power module in the modular electrical equipment;

[0043] The electrical signal sampling circuit 22 is used to collect the output electrical signal corresponding to each power module in the modular electrical equipment, and send the output electrical signal corresponding to each power module to the control device 21;

[0044] The control device 21 is also used to obtain ...

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Abstract

The invention is applicable to the technical field of fault detection, and provides a detection system for a power module in modular electrical equipment, which comprises a control device and an electric signal sampling circuit, the control device is used for sending a PWM signal to each power module in the modular electrical equipment; the electric signal sampling circuit is used for collecting output electric signals corresponding to all power modules in the modular electrical equipment and sending the output electric signals corresponding to all the power modules to the control device. Thecontrol device is further used for obtaining the output electric signals corresponding to the power modules and determining the working states of the power modules according to the output electric signals corresponding to the power modules and a preset threshold range. Start and stop of all the power modules can be driven in a centralized mode through the control device, whether output electric signals of all the power modules are normal or not is detected, and therefore the detection efficiency of the multiple power modules of the modular electrical equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of fault detection, and in particular relates to a detection system for power modules in modular electrical equipment. Background technique [0002] Modular electrical equipment is electrical equipment including multiple power modules, which are used in grid-connected inverters, UPS (Uninterruptible Power System, uninterruptible power supply) and subway braking energy feedback systems. Based on the continuous increase of actual power demand, the power level of the whole machine of modular electrical equipment is also greatly increased, so more and more power modules of modular electrical equipment are connected in parallel. With the increase of parallel-connected power modules, it is cumbersome and complicated to check whether the power modules are online and whether there are abnormalities in the wiring of the power modules. [0003] The traditional power module detection method is to perform small off-gri...

Claims

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Application Information

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IPC IPC(8): G01R19/25H02M7/48
CPCG01R19/2513H02M7/48
Inventor 杜伟郑金祥戴永辉肖卓名练富荣
Owner KEHUA DATA CO LTD