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Speed sensor induction motor vector control speed regulation system

A speed sensor, induction motor technology, applied in the field of power electronics and electric drive, can solve problems such as poor adjustment ability

Pending Publication Date: 2022-02-08
NANCHANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Induction motors are widely used in daily life due to their simple structure and stable operation, but they have the defect of poor adjustment ability for occasions with variable load or high speed stability requirements

Method used

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  • Speed sensor induction motor vector control speed regulation system
  • Speed sensor induction motor vector control speed regulation system
  • Speed sensor induction motor vector control speed regulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Implementation example:

[0037] The present invention adopts the implementation parameter of speed sensor induction motor vector control speed regulating system as shown in table 1:

[0038] Table 1 Variables and parameter values ​​of speed sensor induction motor vector control speed control system

[0039]

[0040] Through the example parameters in Table 1, the simulation model is established and its operating environment is debugged. Such as image 3 The simulation structure diagram of the speed control system based on the speed sensor vector control system is shown, which includes the inverter power supply structure module, three-phase induction motor, induction motor signal sampling module, induction motor speed regulation feedback module, vector control system module, etc. part. The establishment of this model can verify the high precision and reliability of the speed sensor system.

[0041] Such as Figure 4 Shown is the dq axis of two-coordinate transfor...

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Abstract

Aiming at the actual application environment of the induction motor, the environment has the characteristic of poor open-loop control precision, and has defects for the stable control environment. Therefore, in order to adapt to the speed regulation control performance in an environment with higher control requirements, the invention provides a closed-loop vector control system of an induction motor. According to a method, on the basis of feedback of a speed sensor of the induction motor and rated parameters of the motor, the vector coordinate system transformation principle is combined, and closed-loop efficient and accurate speed regulation control of the induction motor is achieved through transformation from three variables to two variables and then to three variables. The effectiveness and reliability of high-precision control of the speed sensor vector control system are verified through simulation examples.

Description

technical field [0001] The invention belongs to the field of power electronics and electric transmission, and is especially suitable for the vector speed regulation control of induction motors. It combines the speed sensor of induction motors to sample and feed back its rotational speed, and realizes the high-precision control speed regulation process of induction motor loads through feedback control. . Background technique [0002] Induction motors are widely used in daily life due to their simple structure and stable operation, but they have the disadvantage of poor adjustment ability for occasions with variable load or high speed stability requirements. With the development of power electronics technology and the advancement of information technology, the combination of different power electronics technologies and control methods makes the motor speed control method advance rapidly, and the precise control of induction motors has also developed rapidly. The patent of the...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/18H02P21/20H02P21/22H02P27/08
CPCH02P21/0003H02P21/18H02P21/20H02P21/22H02P27/08
Inventor 丁志林卜文萍蔡兴封淑玲
Owner NANCHANG INST OF SCI & TECH
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