Electrical transmission system of DC common-bus locomotive bed based on multiple four-quadrant rectification

Abstract

The invention relates to an electrical transmission system of a DC common-bus locomotive bed based on multiple four-quadrant rectification. The system comprises a high tension switchgear (G1), a transformer (TM1), multiple active filtering four-quadrant rectification systems (AFE1 and AFE2), intermediate common DC bus inverters (INV1 to INV8), accompanied test motors (M1 to M8) and an intermediateDC bus discharge loop; a distribution power supply of the locomotive bed supplies power in the corresponding voltage level to an active filtering four-quadrant filter via the high tension switchgear(G1) and the transformer (TM1), in the rear ends of the multiple active filtering four-quadrant rectification systems (AFE1 and AFE2), the intermediate common DC bus inverters (INV1 to INV8) are connected in parallel to a common DC bus, and each inverter drives one accompanied test motor. The system can be used to solve technical problems in the electrical transmission system of the locomotive bedin the prior art, the investment and operation cost of the locomotive bed are reduced, and energy saving and environment protection are achieved.

Description

technical field [0001] The present invention relates to an electrical control system, in particular to rectifier intelligent grid-connected control technology, multiple rectifier technology, intermediate DC common bus multi-converter energy circulation technology, the DC common bus locomotive test bench electric drive system based on multiple four-quadrant rectification It belongs to the technical field of locomotive test bench design and manufacture. Background technique [0002] In recent years, with the rapid development of railway transportation, the safety of railway transportation is related to the national economy and the people's livelihood. Therefore, the performance requirements of various parts of the locomotive are very high. Before the locomotive leaves the factory, various performance tests must be carried out. The locomotive test bench can simulate infinitely long tracks. The locomotive provides mileage operating conditions, so as to verify the traction brakin...

AI Technical Summary

Problems solved by technology

[0003] The locomotive test bench is a multi-axis control system. The existing locomotive test bench is equipped with a complete set of independent electric traction system for each axle. Each electric traction system includes: high-voltage switch cabinet, traction transformer cabinet, rectifier, inverter cabinet and load motor, etc. Lead to high investment and operating costs of the existing locomotive test bench

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