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Method of verifying the operation of a motor propulsion plant fitted to an automotive vehicle and corresponding system

A technology for motor vehicles and electric motors, which is applied in the direction of controlling electromechanical transmission devices, motor vehicles, hybrid vehicles, etc., and can solve problems such as unsuitable machines

Active Publication Date: 2015-12-09
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One can refer to the document JP2001268980, which describes the evaluation of the current flowing in DC machines, but this technical solution is not suitable for machines operating with sinusoidal currents

Method used

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  • Method of verifying the operation of a motor propulsion plant fitted to an automotive vehicle and corresponding system
  • Method of verifying the operation of a motor propulsion plant fitted to an automotive vehicle and corresponding system
  • Method of verifying the operation of a motor propulsion plant fitted to an automotive vehicle and corresponding system

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Embodiment Construction

[0033] figure 1 The different steps of a method PR for verifying the operation of a drive train equipped with an electric drive or a hybrid drive motor vehicle are schematically shown. A vehicle's powertrain may include an electric motor equipped with a permanent magnet rotor and stator.

[0034] A first step E00 can be implemented in which the stator current (or torque) can be adjusted to obtain a control signal. These control signals can be expressed in Pike space, and for example by V d (component on the direct axis) and V q (component on the quadrature axis) to represent. This adjustment can be performed in conventional ways, for example by using a proportional-integral corrector or a proportional-integral-derivative corrector.

[0035] The method may also include in step E01 by I d (direct axis component) and I q These direct and quadrature components of the current represented by (quadrature component) are measured. As a variant, step E01 can be carried out later ...

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Abstract

Method and corresponding system for verifying the operation of a motor propulsion plant fitted to an automotive vehicle with electric or hybrid traction, the motor propulsion plant comprising an electric motor furnished with a permanent-magnet rotor, said method comprising a regulation (E00) of the currents of the stator and a measurement of the direct and quadratic components of the currents (E01), the method comprising: - an application (E03), in a model of the electric motor linking the control signals to the direct and quadratic components of the currents, of a change of variable in which X=Iq3+Id3, Y=Iq-Id, - determination (E04) of minimum and maximum bounds for X and Y so as to deduce therefrom minimum and maximum bounds for Iq and Id, - a comparison (E05) between the measured direct and quadratic components of the currents and said minimum and maximum bounds for Iq and Id.

Description

technical field [0001] The invention relates to the verification of the operation of a power train of a motor vehicle equipment, and in particular of sensors embedded in the power train, and which is equipped with a permanent magnet machine. Background technique [0002] In motor vehicles with an electric drive, the torque provided by the electric motor must be monitored. Because the torque of an electric machine is directly related to the currents flowing in it, these currents must be precisely controlled. [0003] In synchronous machines, especially three-phase permanent magnet synchronous machines with axial flux, the currents flowing in the three phases of the stator are sinusoidal and are each phase shifted by These currents generate a rotating magnetic field in the electric machine. The rotor is made of permanent magnets, for example provided with five pairs of poles. Like a compass, the rotor is naturally aligned in the rotating magnetic field generated by the sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P29/02B60L15/02
CPCH02P29/027B60L15/025H02P21/14Y02T10/643B60L3/0038B60L3/12B60L15/02H02P21/22Y02T10/64Y10S903/903
Inventor A·马卢姆
Owner RENAULT SA