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Method of screening a resistive short-circuit, system, module and recording medium for this method

A technology of traction system and resistance part, which is applied in the field of finding impedance short circuit with non-zero real part, can solve the problem of not being able to obtain any information about the existence of resistance short circuit, and achieve the effect of simplification

Inactive Publication Date: 2012-03-28
ALSTOM TRANSPORT TECH SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From this measurement of the balancing current, no information can be obtained about the presence or absence of a resistive short circuit

Method used

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  • Method of screening a resistive short-circuit, system, module and recording medium for this method
  • Method of screening a resistive short-circuit, system, module and recording medium for this method
  • Method of screening a resistive short-circuit, system, module and recording medium for this method

Examples

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Embodiment Construction

[0048] figure 1 A vehicle 2 is shown equipped with a traction system 4 capable of driving drive wheels of the vehicle 2 in rotation. In the present invention, the vehicle 2 is a railway vehicle, such as a train.

[0049] For the remainder of the present invention, features and operations known to those skilled in the art will not be described in detail.

[0050] Also, for simplicity, figure 1 Only one drive wheel 6 is shown.

[0051] The system 4 is supplied with DC voltage by the suspension wire 10 . More particularly, the system 4 is connected to the catenary 10 via a pantograph 12 and an input coil 13 connected in series with a circuit breaker 14 .

[0052] System 4 includes a three-phase power supply formed by DC supply voltage lines connected to the input of a controllable three-phase inverter / rectifier 20 .

[0053] In the present example, the supply bus is formed by two electrical conductors 22 and 24 . The conductor 22 is electrically connected to the output of t...

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Abstract

A method for searching the electric impedance short circuit which between the coil windings and is provided with non-zero real part, the coil winding is used to excitateding magnetism to the multiphase motor, the method includes the following compositive steps: a) controlling the inverter / rectifier to make the electric motor working in the multiphase current energy-producing mode (in the procedure 122), b) controlling the switch to connect the resistive load to each pair of phase conducting wire (in the procedure 124), the resistive load can allow at least comparing the fundamental componentpower of the electricity current which measured by the sensor to detect the electric impedance short circuit with non-zero real part, and c) using the electricity measured by the sensor to detect theexistence of the short circuit (in the procedure 128 and 138).

Description

technical field [0001] The present invention relates to a method, a system, a module and a recording medium used for finding an impedance short circuit with a non-zero real part. Background technique [0002] There are traction systems for vehicles that have: [0003] - polyphase electric motors with permanent magnets or wound synchronous polyphase electric motors, each phase of which has one or more field coils capable of generating a magnetic field which rotationally drives the shaft of the electric motor, [0004] - phase conductors for connecting the coils of the phases of the motor to the controllable polyphase power supply, [0005] - current sensors associated with the phase conductors, which sensors are capable of measuring the current flowing in each phase conductor, and [0006] - A control module capable of controlling the torque of the shaft of the electric motor as a function of the current measured by the sensor. [0007] Some of these traction systems are a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34G01R27/02G01M17/00
CPCG01R31/343G01R31/025G01R31/52
Inventor S·贝兰D·西佩尔斯O·贾科莫尼
Owner ALSTOM TRANSPORT TECH SAS
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