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Temperature compensation method of output torque of permanent magnet synchronous motor for vehicle based on neural network

A permanent magnet synchronous motor and output torque technology, applied in the direction of motor, control generator, motor generator control, etc., can solve the influence of permanent magnet synchronous motor output torque, output speed, and the complex uncertainty of permanent magnet synchronous motor And other issues

Active Publication Date: 2017-01-25
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0027] The technical problem to be solved by the present invention: because the controlled object (permanent magnet synchronous motor) is complex and has uncertainty, and has a great influence on the output torque and output speed of the permanent magnet synchronous motor

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  • Temperature compensation method of output torque of permanent magnet synchronous motor for vehicle based on neural network
  • Temperature compensation method of output torque of permanent magnet synchronous motor for vehicle based on neural network
  • Temperature compensation method of output torque of permanent magnet synchronous motor for vehicle based on neural network

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0056] A method for temperature compensation of the output torque of a permanent magnet synchronous motor for a vehicle based on a neural network of the present invention specifically includes the following steps:

[0057] 1. Analysis of the influence of temperature on PMSM output torque

[0058] The motor current is a three-phase symmetrical current, assuming that the rotor damping is ignored, the iron core is saturated, and the iron loss. The formula of the synchronous rotation state of the permanent magnet synchronous motor in the d-q coordinate system is as follows;

[0059] i · q = - R L ...

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Abstract

The invention discloses a temperature compensation method of an output torque of a permanent magnet synchronous motor for a vehicle based on a neural network. The method aims at the influence of temperature on stator resistance and a permanent magnetic flux linkage and comprises the following steps: building a neural network model for describing non-linear coupling action of the temperature on multiple parameters of a vehicle-mounted permanent magnet synchronous motor; and based on the built neural network model, designing a temperature compensator on the output torque, so that the motor can be effectively and continuously controlled and an ideal and smooth output torque is obtained. The method disclosed by the invention has the advantages that a temperature compensation control system is adopted, the controller regulates the control quantity according to different motor temperatures, and then real-time control is carried out on the motor, so that the smooth output torque is obtained, and the operation difficulty of a technician is lowered; and the voltage control quantity does not need to be adjusted according to an efficiency map in real time and can be adjusted in real time according to the continuous change of the temperature, so that the control precision is greatly improved.

Description

technical field [0001] The invention relates to the technical field of temperature compensation of the output torque of a permanent magnet synchronous motor for vehicles, in particular to a temperature compensation method for the output torque of a permanent magnet synchronous motor for vehicles based on a neural network. Background technique [0002] Compared with the traditional electric excitation motor, the permanent magnet synchronous motor (PMSM) does not require excitation current, significantly improves the power factor, reduces stator loss and stator current, and has no rotor loss during stable operation. Thereby reducing the overall loss. The motor efficiency is increased by 2% to 8% compared with the electric excitation motor efficiency of the same specification. At the same time, the permanent magnet synchronous motor can maintain a high power and efficiency factor in the range of 25% to 120% of the rated load, so that it has an obvious energy-saving effect duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/20B60L15/20
CPCB60L15/20B60L2240/423H02P21/0014H02P21/0017Y02T10/64Y02T10/72
Inventor 张倩马正雷钱喆王群京李国丽
Owner ANHUI UNIVERSITY
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