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Speed sensor induction motor rotating speed constant torque adjusting system

A technology of speed sensor and induction motor, which is applied in the direction of control system, control generator, vector control system, etc., and can solve problems such as poor stability and poor speed regulation performance

Pending Publication Date: 2022-01-07
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 due to their simple structure and low manufacturing cost, but they have defects in speed regulation performance, such as poor stability, poor speed regulation performance, etc.

Method used

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  • Speed sensor induction motor rotating speed constant torque adjusting system
  • Speed sensor induction motor rotating speed constant torque adjusting system
  • Speed sensor induction motor rotating speed constant torque adjusting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Implementation example:

[0035] The present invention adopts the implementation parameters of the speed sensor vector control constant speed load torque adjustment system as shown in Table 1:

[0036] Table 1 Variables and parameter values ​​of speed sensor vector control constant speed load torque regulation system

[0037]

[0038]

[0039] Through the example data parameters listed in Table 1, establish the simulation model and debug its operating environment, and the simulation results can be obtained. like image 3 Shown is the simulation diagram of SVPWM vector control induction motor constant speed load torque regulation system, which includes motor drive inverter module, three-phase induction motor module, induction motor signal sampling module, induction motor speed sampling module, vector control system module and Pulse generation drive module, etc. By giving a constant speed signal at the speed given end and giving a torque change signal to the load...

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PUM

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Abstract

An induction motor has many problems in operation under an open-loop condition, such as slow response and complex and unstable transition process. By designing a closed-loop speed regulation system of the induction motor, the stability and reliability of the induction motor in the operation process can be enhanced, and the application range of the induction motor is widened. According to the invention, a speed sensor induction motor rotating speed constant torque adjusting system is designed, speed sensor vector speed regulation control is combined, the system is suitable for the working condition environment that the rotating speed constant load torque needs to be followed. The method is based on feedback of an induction motor speed sensor and rated parameters of a motor, is combined with a vector coordinate system transformation principle, and achieves efficient and accurate closed-loop load torque following control of the induction motor through conversion from three variables to two variables and then to three variables.

Description

1 technical field [0001] The invention belongs to the field of power electronics and electric transmission, and is especially suitable for the speed sensor induction motor speed constant torque adjustment system, which combines the speed sensor of the induction motor to sample and feed back the speed of the induction motor, and realizes the high precision and fast speed of the induction motor load through feedback control The process of responding to the load torque following characteristic. 2 background technology [0002] Induction motors are widely used due to their simple structure and low manufacturing cost, but they have defects in speed regulation performance, such as poor stability and poor speed regulation performance. By designing its closed-loop control method, such as the closed-loop vector control of the speed sensor, the fast and efficient control effect of the induction motor can be realized, and the application scenarios and scope of the induction motor can b...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/18H02P21/06H02P21/22H02P27/08
CPCH02P21/0003H02P21/18H02P21/06H02P21/22H02P27/08
Inventor 卜文萍丁志林蔡兴封淑玲
Owner NANCHANG INST OF SCI & TECH
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