High-voltage inverter power unit control panel automatic test system and test method thereof

An automatic test system, high-voltage inverter technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of high cost, inability to accurately and quickly locate faults, low efficiency, etc., to improve efficiency , Reduce the interference of human factors on the test results, high efficiency

Inactive Publication Date: 2017-05-31
DAYU ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using this test method, the cost is high, the efficiency is very low, and the fault cannot be loc

Method used

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  • High-voltage inverter power unit control panel automatic test system and test method thereof
  • High-voltage inverter power unit control panel automatic test system and test method thereof

Examples

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[0034] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0035] See figure 1 As shown, an embodiment of the present invention provides an automatic test system for a power unit control board of a high-voltage inverter, including:

[0036] The test fixture is used to install the power unit control board to be tested. The test fixture includes a needle bed, which is used to lead the test point signal of the power unit control board to facilitate loading of excitation signals and output response signals.

[0037] The sampling and conditioning circuit board is electrically connected to the test fixture. The sampling and conditioning circuit board is used to collect and adjust the test signals of each test point of the power unit control board to obtain analog signals. The test signals include analog voltage signals and analog current signals. The test signal of each test point of the unit control board is amplified or redu...

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Abstract

The present invention discloses a high-voltage inverter power unit control panel automatic test system and a test method thereof. The system comprises: a test tool; a sampling conditioning circuit board electrically connected with the test tool; a test excitation source connected with the test tool; a control switch connected with the test excitation source; an industrial control computer integrated or connected with an analog input capture card and a digital quantity output capture card, wherein the analog input capture card is connected with the sampling conditioning circuit board through an analog quantity terminal board, and the digital quantity output capture card is connected with the control switch through the analog quantity output terminal board; and an upper computer connected with the industrial control computer. The high-voltage inverter power unit control panel automatic test system and the test method thereof can automatically complete the test of the power unit control board and has the advantages of high test result accuracy, high test efficiency and low test difficulty.

Description

technical field [0001] The invention relates to the technical field of electronic product testing, in particular to an automatic testing system and testing method for a control board of a power unit of a high-voltage frequency converter. Background technique [0002] The power unit control board is the core control board of the power unit of the high-voltage inverter. It communicates with the control cabinet of the high-voltage inverter through optical fiber, receives the IGBT switch signal issued by the control cabinet, and uploads the internal sampling and fault information of the power unit to the in the control cabinet. It is mainly composed of the following parts of the circuit: auxiliary power circuit, optical fiber transceiver signal processing circuit, three-phase input voltage sampling circuit, DC bus capacitance voltage sampling circuit, inverter output voltage sampling circuit, IGBT temperature sampling circuit and IGBT overcurrent fault detection There are many ...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0256G05B2219/24065
Inventor 李荣朋李崇波宁国云王怡华
Owner DAYU ELECTRIC
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