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Vehicle alternating current transmission system

A transmission system, alternating current technology, applied in vehicle components, railway vehicles, motor vehicles, etc., can solve the problem of inability to meet variable frequency loads, and achieve the effects of maintenance-free reduction, improved system efficiency, and low calorific value

Active Publication Date: 2020-02-25
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The auxiliary inverter only has one CVCF fixed-frequency output, which cannot meet the needs of variable-frequency loads

Method used

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  • Vehicle alternating current transmission system

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] Vehicle AC drive system, 2×500KW diesel permanent magnet generator sets replace the original 1×1000KW electric excitation diesel generator set.

[0025] Dual diesel engine working mode:

[0026] Two 500KW diesel engines drive two 500KW permanent magnet synchronous generators respectively, and the four-quadrant finisher controls the output voltage and power of the permanent magnet synchronous generators so that they output 484-1072V three-phase AC voltage according to the diesel engine speed, and then supply four sets respectively Three-level traction inverter.

[0027] Single diesel engine working mode:

[0028] A 500KW diesel engine drives a 500KW permanent magnet main generator, and the four-quadrant finisher controls the output voltage and power of the permanent magnet generator so that it outputs 484-1072V three-phase AC voltage according to the diesel engine speed, and then supplies two sets of three electric generators respectively Flat traction inverter. Reali...

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PUM

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Abstract

The invention relates to an alternating current transmission system, in particular to a vehicle alternating current transmission system, and solves the defects and the problems of a transmission way of an existing heavy track car. The system comprises a traction system and an auxiliary system, wherein the traction system consists of a first traction system and a second traction system; the first traction system and the second traction system have the same structure and independently comprise a diesel engine, a permanent magnet synchronous generator, a four-quadrant traction rectifier, a traction inverter and an asynchronous traction machine; the auxiliary system comprises an auxiliary system direct current bus which is connected with an auxiliary inverter; the direct current bus of the rectifier of the first traction system is connected with the auxiliary system direct current bus through a first DC / DC converter and a first fling-cut switch; and the direct current bus of the rectifierof the second traction system is connected with the auxiliary system direct current bus through a second DC / DC converter and a second fling-cut switch. The alternating current transmission system isespecially suitable for a GCD-1000II heavy track car and is also suitable for other vehicles.

Description

technical field [0001] The invention relates to an AC power transmission system, in particular to a vehicle AC power transmission system. Background technique [0002] Heavy-duty rail vehicles are suitable for traction operations and high-speed operation of railway construction and engineering departments in the speed-up section. They can also be used as official vehicles for shunting operations, personnel transportation, and on-site inspections. They can be used for railway construction, engineering machinery, and railway emergency rescue. Provide power supply. [0003] At present, the transmission mode of heavy-duty rail cars is usually hydraulic, AC / DC direct current drive or single diesel engine + electric excitation generator set mode AC / DC / AC asynchronous AC drive. [0004] Hydraulic transmission: There are problems of low transmission efficiency and pollution leakage. [0005] AC / DC DC power transmission: The traction motor is a DC motor. Compared with the asynchron...

Claims

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Application Information

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IPC IPC(8): B60L50/13
CPCB60L50/13B60L2200/26Y02T10/72
Inventor 李勇斌李博韬金春羽夏建民
Owner CRRC YONGJI ELECTRIC CO LTD
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