Integrated intelligent testing system for large power convertor assembly

Abstract

The converter assembly to be tested is driven by quasi sine pulse current and voltage sources with large power and long cycle or frequency and amplitude modulation power supply in high frequency. Multiple sensors are configured with measuring range equal to test volume. Signals detected by sensors through data acquisition module are sent to industrial controller as main control part and DSP as auxiliary control part respectively. The industrial controller and DSP can be operated through keyboard of DSP, as well as keyboard and mouse of the industrial controller. Display and printing units are provided. Advantages of the invention are: volume of the testing power sources is reduced to 2 % of original one so as to lower power consumption greatly; multiple sensors make testing fast and in high accuracy; Integrated intelligent fault diagnosis function assures high maintenance efficiency.

Description

technical field [0001] The invention relates to a comprehensive intelligent test system for large-scale industrial converters for testing, testing and fault diagnosis, and belongs to the technical field of power electronics. Background technique [0002] This test system is a test system used for regular repair and maintenance of large-scale industrial converters. It is widely used in converters of railway locomotives and motor cars, and also used in other large-scale industrial converters. In order to ensure the safe operation of high-power converters, the converters in use must undergo strict tests on a regular basis to determine whether the equipment meets the requirements for safe operation. At present, the test device used by most enterprises is to generate high-power current pulses by a system of three transformers: capacity increasing transformer-voltage regulating transformer-current transformer. A lot of equipment is used, the floor area is large, the power consump...

AI Technical Summary

Problems solved by technology

A lot of equipment is used, the floor area is large, the power consumption is large, and the working environment is poor; the digital clamp meter is manually divided into the corresponding branch to be tested for multiple times, and the number is read, because multiple branches are operated in batches , the workload is heavy, and the angle difference between the clamp meter and the circuit under test is often artificially large, resulting in large artificial errors and longer test time

Since the test process is basically done manually, computer fault diagnosis cannot be realized; and there are few test functions, and pulse test, component characteristic test, bridge arm component selection test, etc. cannot be performed.

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