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An over-phase control strategy for traction converters of hybrid electric trains

A traction converter and hybrid technology, which is applied in the field of over-phase control strategy of traction converters of hybrid electric trains, can solve the problems of increasing driver pressure and hidden dangers of safe operation of locomotives, so as to recover braking energy and reduce operation and maintenance. cost, the effect of increasing the average driving speed

Active Publication Date: 2019-04-30
BEIJING JIAOTONG UNIV +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

These operations not only increased the pressure on the driver, but also caused hidden dangers to the safe operation of the locomotive

Method used

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  • An over-phase control strategy for traction converters of hybrid electric trains
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  • An over-phase control strategy for traction converters of hybrid electric trains

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Embodiment Construction

[0059] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0060] The over-phase split control strategy of the traction converter of the hybrid EMU described in the present invention adopts the catenary power supply mode before and after the over-phase split, and the DC output voltage of the 4QC (four-quadrant rectifier) ​​is given by the traction inverter, and the traction inverter The device sends different DC voltage command values ​​to 4QC according to different working conditions;

[0061] The DC / DC battery system works in charging or discharging state according to different working conditions and its own power status;

[0062] According to the different working conditions of the locomotive and the state of the DC / DC battery system when the locomotive is over-phased, it is divided into the following modes:

[0063] Mode 1, under the normal state of the DC / DC battery system, the traction-excessive phase-traction m...

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Abstract

The invention relates to an excessive phase control strategy for a traction converter of a hybrid power motor train unit. An overhead line system power supply mode is adopted in front of and behind an excessive phase, the direct-current output voltage of a four-quadrant rectifier 4QC is given by a traction inverter, and the traction inverter sends different direct-current voltage command values to the 4QC according to different working conditions; a DC / DC battery system works in a charging state or a discharging state according to the different working conditions and the electric quantity condition of the DC / DC battery system; and six modes are formed according to the different working conditions of the locomotive excessive phase and the state of the DC / DC battery system. By the adoption of the strategy, the motor train unit normally passes through a split-phase region, meanwhile, the DC / DC battery system (a power battery system) of the hybrid power motor train unit is used for supplying traction energy or recycling braking energy in the split-phase region, and therefore the purposes that the traction excessive phase, energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of hybrid multiple trains, in particular to an over-phase-separation control strategy for traction converters of hybrid multiple trains. Background technique [0002] The power supply method adopted by the railway is single-phase power supply. In order to balance the three-phase power system, the railway catenary adopts the power supply mode of segmental commutation. In order to prevent phase-to-phase short circuit and locomotive equipment damage due to the different voltage phases of the two power supply sections, it is necessary to set up a phase separation zone between independent power supply sections. [0003] When an ordinary electric locomotive passes through the phase-splitting area, it is usually necessary to disconnect the main circuit breaker and pass through the phase-splitting area without dropping the pantograph by the inertia of the locomotive. At the same time, in order to ensure that the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L50/53
CPCB60L50/53B60L53/20B60L2200/26Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 刁利军张馨予刘志刚张钢王磊陈杰吕海臣
Owner BEIJING JIAOTONG UNIV
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