Electrical equipment self-checking device and method of high-speed magnetic levitation traction system

Abstract

The invention discloses an electrical equipment self-checking device of a high-speed magnetic levitation traction system. The electrical equipment self-checking device comprises: a low-power converter, which is used for outputting alternating current with k-th frequency during a k-th test; a filter having at least N states; a controllable output switch; a detection circuit, which is used for measuring output voltage and current; a first temperature measuring device, which is used for measuring the temperature of a feed cable and each stator section; a self-checking controller, which is used for sequentially carrying out N tests, controlling the filter to be in a state corresponding to the k-th test when the k-th test is carried out, sequentially carrying out tests from a first stator section to an M-th stator section under the k-th test by controlling a stator switching station, and when any stator section is tested, based on the output of the detection circuit and the first temperature measuring device, calculating circuit characteristics. By applying the scheme of the invention, a comprehensive and precise self-checking result can be obtained. The invention further provides an electrical equipment self-checking method of the high-speed magnetic levitation traction system, and the corresponding effect is achieved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a self-checking device and method for electrical equipment of a high-speed maglev traction system. Background technique [0002] The high-speed maglev train adopts linear motor drive technology, which abandons the wheels, transmission mechanism and the transportation mode of the traditional wheel-rail train, so that the speed of the maglev train can be greatly improved. The traction system provides power for the train and is relatively complex, mainly including traction control system, traction converter, input and output switches, stator switch station, feeder cable, long stator linear synchronous motor, etc. [0003] The stator section winding of the high-speed maglev motor adopts segmented power supply. For example, the 1200-meter Shanghai experimental line is used as a stator section, and each stator section is equipped with a corresponding stator section switch nearby. ...

AI Technical Summary

Problems solved by technology

Such a detection method is relatively simple and convenient, but due to the low switching frequency and the large harmonics of the output voltage and current, the measurement accuracy of the motor resistance and inductance is very low

And the feeder cable and stator resistance have been in the outdoor working state of high voltage and high current for a long time. As the working time increases, the characteristics will change. When it is necessary to measure accurate data to provide reference for maintenance and replacement of components, the traditional traction converter It is difficult to provide high-precision data reference if the device performs self-test

Images