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Method for controlling a power train and corresponding system

A technology of power train and control signal, applied in control system, vector control system, control electromechanical transmission, etc., can solve problems such as destructive current

Active Publication Date: 2015-04-15
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the values ​​of these control signals can diverge up to a maximum value, which leads to particularly high or even destructive currents
For example, these control signal values ​​can be as high as 400 volts, which results in currents of up to 40 000 amperes

Method used

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  • Method for controlling a power train and corresponding system
  • Method for controlling a power train and corresponding system
  • Method for controlling a power train and corresponding system

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Embodiment Construction

[0025] figure 1 Schematically shows the execution steps of a method for controlling a drive train for equipping a motor vehicle and comprising an electric motor. The method comprises a first step (step E00 ) of measuring the currents flowing in the rotor and the stator, which makes it possible to obtain on the one hand the values ​​of these currents and on the other hand the control signals, i.e. applied with Get the voltage for these currents. The minimum and maximum limits of the current value can be formulated via these control signals (step E11 ), for example by means of the electric motor or a model of the electric machine. Furthermore, it is also possible to apply a Parker transformation to these measurement currents (step E12 ). Finally, in a comparison step E30, a check is performed to ensure that the measured and transformed values ​​are within the boundaries. If yes (step E40 ), it can be judged that the sensors are not faulty and regulation can continue, otherwis...

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Abstract

A method for controlling a power train and corresponding system. A method for controlling a power train equipping a motor vehicle and comprising an electric motor provided with a rotor and a stator, said method comprising the regulation of the currents of the rotor and the stator delivering control signals to the electric motor, said currents to be regulated and said control signals being expressed in a rotating reference system and comprising a plurality of axes. The method includes a measurement (E00) of the values of the currents of the rotor and the stator, a transformation (E12) of said measurements into said rotating reference system, a determination (E11) of minimum and maximum limits for each of the currents on the basis of said control signals, and a comparison (E30) of the measured signals with said minimum and maximum limits.

Description

technical field [0001] The present invention relates to the control of electric motors, and in particular to the control of wound rotor synchronous motors. Background technique [0002] A wound rotor synchronous motor consists of a stationary part called the stator and a moving part called the rotor. The stator comprises three coils which are offset by 120 and which are supplied with alternating current. The rotor includes a coil supplied with direct current. The phase currents of the stator depend on the resistance and inductance of the rotor and the stator and the mutual inductance between the rotor and the stator. [0003] Conventionally, control signals are used to control the stator and rotor currents. In this way, regulation is carried out according to the measurements of these currents. [0004] If one of the sensors providing these measurements is faulty, eg a current value that keeps showing zero, this adjustment will increase the value of the control signals in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00H02P21/14
CPCY02T10/643B60L3/0038H02P21/14B60L15/025B60L2220/14B60L2240/421B60L2240/425B60L2240/429B60L50/51H02P21/22Y02T10/64Y02T10/70
Inventor L·梅里耶纳
Owner RENAULT SA