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The detection method of the rotor temperature of the motor

A rotor temperature and detection method technology, which is applied in the control of generators, motor generator control, electronic commutation motor control, etc., can solve the problems of long time consumption and low precision, save costs, improve detection accuracy, and avoid influence Effect

Active Publication Date: 2022-07-01
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for detecting the rotor temperature of a motor, so as to solve the defects of the existing rotor temperature detection method that it takes a long time and has low precision

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  • The detection method of the rotor temperature of the motor
  • The detection method of the rotor temperature of the motor
  • The detection method of the rotor temperature of the motor

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Embodiment Construction

[0065] The method for detecting the rotor temperature of the motor proposed by the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

[0066] figure 1 It is a schematic flowchart of a method for detecting the rotor temperature of a motor in an embodiment of the present invention. The following is combined with figure 1 As shown, each step of the rotor temperature detection method in this embodiment is described in detail.

[0067] In step S100, the factor terms related to the d-axis current Id, the q-axis current Iq, and the rotational speed n in the q-axis volt...

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Abstract

The present invention provides a method for detecting the rotor temperature of a motor. By converting the q-axis voltage equation, and using the reference motor to calibrate the converted q-axis voltage equation, when the motor to be detected is detected, it can be calculated according to the calibration result combined with the converted q-axis voltage equation. The flux linkage value of the motor to be detected, and then the rotor temperature of the motor can be calculated. That is, the detection method of the rotor temperature in the present invention combines the function conversion, the detection process is relatively simple, the detection accuracy is high, and the time consumption is short.

Description

technical field [0001] The invention relates to the field of motors, in particular to a method for detecting the temperature of a rotor of a motor. Background technique [0002] Generally speaking, the main function of the motor is to generate driving torque as a power source for electrical devices or various machinery. Commonly used electric machines include, for example, permanent magnet synchronous machines. [0003] Among them, the rotor temperature of the motor will directly affect the output torque of the motor, and when the rotor temperature changes, the output torque will change accordingly. And, by correcting the rotor flux linkage in real time through the rotor temperature, the torque accuracy can be improved. At the same time, the rotor temperature can also be used to prevent the irreversible demagnetization of the permanent magnet steel. If the rotor temperature is not monitored, the irreversible demagnetization will lead to a permanent and substantial decrease...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14
CPCH02P21/14
Inventor 刘翔杨红周奇
Owner UNITED AUTOMOTIVE ELECTRONICS SYST