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Driving motor control method using motor rotor temperature

A technology for driving motor control and motor rotor, which is used in motor control, torque ripple control, estimation/correction of motor parameters, etc. , the effect of improving performance

Active Publication Date: 2016-07-06
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the structure of the motor, it is difficult to attach a temperature sensor with wires to the rotor of the motor, so it can only be attached to the stator of a motor with a winding part where current flows normally.

Method used

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  • Driving motor control method using motor rotor temperature

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Embodiment Construction

[0032] Below, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Through these embodiments, those skilled in the art of the present invention can realize various different forms, so the present invention is not limited to the implementation described here. example.

[0033] figure 1 It represents the structure of the driving motor according to the present invention and the control logic of the driving motor using the temperature of the rotor of the motor.

[0034] As shown in the figure, the driving motor 10 is composed of an inverter 11 and a motor 12, and a sensor 20 is installed on the driving motor 10 to measure the factors of MTPA control (field weakening control), and the MCU (MotorControlUnit, motor control unit) 30 uses The torque variation compensation logic of the measured value of the sensor 20 is used to control the output torque of the drive motor 10 .

[0035] The drive motor 10 is a permanent magne...

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Abstract

According to the invention, the torque variation compensation logic of a permanent magnet asynchronous motor is performed after the rotor temperature value of a motor (12) is estimated according to the power consumption value of the motor (12) calculated through the output current of an inverter (12) and the rotor temperature value of the motor (12) for comparison with the motor stator temperature value measured at the stator portion of the motor (12) is calculated, and a current control chart is formed according to the rotator temperature value of the motor (12), which actually has influence on the motor control, and is applied to MTPA control (field weakening control), so that the motor output torque linearity and precision of a permanent magnet synchronous motor can be increased greatly and the instability caused by the motor in pro-environmental vehicles, such as hybrid power vehicles, can be relieved.

Description

technical field [0001] The present invention relates to a driving motor applied to an environment-friendly vehicle, and particularly relates to estimating the temperature of the motor rotor that actually affects the control of the motor based on the temperature obtained by a temperature sensor installed on the motor stator, thereby greatly improving the temperature based on the temperature. A drive motor control method utilizing motor rotor temperature for varying motor output torque linearity and precision. Background technique [0002] Generally, drive motors (synchronous motors or asynchronous motors) used in eco-friendly vehicles such as hybrid vehicles change inductance characteristics and permanent magnet magnetic flux characteristics due to ambient temperature (engine room) and heat generated according to driving conditions. [0003] Such changes in the inductance characteristics and the magnetic flux characteristics of the permanent magnets affect the control charact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/10
CPCB60W10/08B60W20/00H02P23/14H02P29/60H02P2207/05
Inventor 金日汉
Owner HYUNDAI MOBIS CO LTD