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Permanent magnet synchronous motor variable-frequency speed regulation system based on DSP

A permanent magnet synchronous motor, frequency conversion speed regulation technology, applied in the direction of a single motor speed/torque control, control system, motor control, etc. The control operation is simple and efficient, and the effect of improving the processing speed

Inactive Publication Date: 2018-10-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this system does not solve the problems of out-of-step and oscillation of synchronous motors, it is rarely used in actual speed regulation occasions.

Method used

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  • Permanent magnet synchronous motor variable-frequency speed regulation system based on DSP
  • Permanent magnet synchronous motor variable-frequency speed regulation system based on DSP
  • Permanent magnet synchronous motor variable-frequency speed regulation system based on DSP

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Experimental program
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Embodiment

[0037] For the convenience of description, the relevant technical terms appearing in the specific implementation manner are explained first:

[0038] DSP (Digital Signal Processor): digital signal processor;

[0039] PMSM (Permanent Magnet Synchronous Motor): Permanent Magnet Synchronous Motor;

[0040] FOC (Field Oriented Control): Field Oriented Control;

[0041] PWM (Pulse Width Modulation): Pulse Width Modulation;

[0042] SVPWM (Space Vector Pulse Width Modulation); Space Vector Pulse Width Modulation;

[0043] CPLD (Complex Programmable Logic Device): Complex programmable logic device.

[0044] figure 1 It is the principle diagram of the permanent magnet synchronous motor frequency conversion speed regulation system based on DSP of the present invention.

[0045] In this embodiment, as figure 1 As shown, a DSP-based permanent magnet synchronous motor frequency conversion speed regulation system of the present invention includes: a host computer, a DSP microcontroll...

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Abstract

The invention discloses a permanent magnet synchronous motor variable-frequency speed regulation system based on a DSP. A control code is transmitted to the DSP through an upper computer. The DSP generates an enabling signal and a control signal according to the control code and the current, the voltage, the rotating speed and the rotor angle of the permanent-magnet synchronous motor. In an enabling state of the enabling signal, a Danfoss frequency converter is enabled. Furthermore according to the control signal, frequency conversion voltage which starts the permanent magnet synchronous motoris generated. After filtering processing of the frequency conversion voltage, through protection of a protecting device, variable-frequency control of the permanent magnet synchronous motor is realized.

Description

technical field [0001] The invention belongs to the technical field of intelligent control of electric power systems, and more particularly relates to a DSP-based permanent magnet synchronous motor frequency conversion speed regulation system. Background technique [0002] At present, the synchronous motor frequency conversion speed regulation system can be divided into two categories in terms of control methods: one is the other-controlled frequency conversion speed regulation system; the other is the self-controlled frequency conversion speed regulation system. The frequency conversion device used in the other-controlled frequency conversion speed regulation system is independent, and its output frequency is directly determined by the speed given signal. Because this kind of system does not solve the problems of out-of-step and oscillation of synchronous motor, it is rarely used in actual speed regulation occasions. With the development of power electronic technology and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02P27/08H02P29/50H02H7/08
CPCH02H7/08H02P6/08H02P27/08H02P2207/05H02P29/50
Inventor 刘群英张家枢张涣陈明华张永昌张昌华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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