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Singlechip-based induction motor variable frequency speed regulation control system

A technology of induction motor and frequency conversion speed regulation, which is applied in the direction of control system, AC motor control, electrical components, etc., to achieve the effects of fast switching speed, shortened development time, and reduced weight

Inactive Publication Date: 2011-02-16
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A high-performance vector control system cannot be realized without the support of a microcomputer

Method used

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  • Singlechip-based induction motor variable frequency speed regulation control system
  • Singlechip-based induction motor variable frequency speed regulation control system
  • Singlechip-based induction motor variable frequency speed regulation control system

Examples

Experimental program
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Embodiment 1

[0033] The design will be further described below in conjunction with the accompanying drawings: the overall structure of the control system is as follows figure 1 As shown, the main circuit is powered by 220V AC. After single-phase bridge uncontrolled rectification and capacitor filtering, a smooth DC voltage is obtained for the IPM module and auxiliary power supply circuit.

[0034] In the inverter circuit part, dsPIC30F4011 outputs six PWM pulse signals to control the IPM module, and obtains three-phase controllable alternating current to supply the asynchronous motor.

[0035] The control part is based on dsPIC30F4011 chip as the core, plus phase current detection circuit, speed detection circuit, serial port communication circuit, key and fault protection circuit.

[0036] The fault protection circuit sends the fault signal after fault synthesis to the control part, and if any fault occurs, the PWM will be closed.

[0037] The overcurrent detection circuit converts the c...

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PUM

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Abstract

The invention discloses a singlechip-based induction motor variable frequency speed regulation control system. The system comprises a main circuit, an auxiliary power circuit, an inverter circuit, a control part, an over-current protection circuit, a rotation speed detection circuit and other peripheral circuits. A 16-bit high-performance signal controller dsPIC30F4011 which is produced by the Microchip Company is used as a control core by the system to perform speed regulation based on vector control motor excitation. A digital signal controller dsPIC30F4011 of the America Microchip Technology Company is used as a chip special for motor control, a digital signal processor (DSP) inner core is embedded, and the chip has quick data processing capacity and is provided with abundant input and output equipment and interface circuits; an intelligent power module (IPM) IRAMSIOUP 60A of the IR Company is an inverter switching device, so that the variable frequency speed regulation control system of an asynchronous motor is constructed; and the system has the characteristics that the system is simple to drive and easy to realize.

Description

【Technical field】: [0001] The invention belongs to the cross technical field of motor control, power electronics and microcomputer principles, and specifically relates to a 16-bit high-performance signal controller dsPIC30F4011 produced by Microchip Company as the control core to design a frequency conversion speed regulation control system for an induction motor. 【Background technique】: [0002] In recent years, with the development of power electronics technology, digital control technology, and control theory, especially the invention of some advanced control technologies, the development of AC frequency conversion speed regulation is also getting faster and faster, making AC speed regulation more and more widely used. Its speed regulation performance is also continuously improved, overcoming many shortcomings that are difficult to overcome in DC speed regulation. The first-generation frequency converter adopts the constant voltage frequency ratio control method, which pe...

Claims

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Application Information

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IPC IPC(8): H02H7/08H02P27/06
Inventor 吴凤英贾丽英马幼捷周雪松李季问虎龙
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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