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Device for closed-loop control of permanent magnet synchronous motor

A permanent magnet synchronous motor, closed-loop control technology, applied in the direction of motor generator control, AC motor control, control of electromechanical transmission devices, etc., can solve the problems of inconvenient reconfiguration, long design cycle of DSP and special chips, etc., to shorten the design cycle Effect

Active Publication Date: 2011-07-13
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to its pertinence of functions, special-purpose chips can be implemented according to the specific requirements of the space vector pulse width modulation (SVPWM) algorithm, but DSP and special-purpose chips have a long design cycle and are not easy to reconfigure

Method used

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  • Device for closed-loop control of permanent magnet synchronous motor
  • Device for closed-loop control of permanent magnet synchronous motor

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Embodiment Construction

[0016] see figure 1 The device for closed-loop control of a permanent magnet synchronous motor provided by the embodiment of the present invention includes: a current sampling recovery module 110, a closed-loop feedback control module 220, a voltage coordinate inverse conversion module 330, a source PFC control module 440, an over-temperature and over-voltage A flow protection module 550 and a space vector pulse width modulation module 660 . Wherein, the current sampling recovery module 110 recovers the two-phase current analog signal into a three-phase current digital signal i u i v i w . The current sampling recovery module 110 includes a first phase current sampling control unit and a second phase current sampling control unit. The first phase current sampling control unit converts the permanent magnet synchronous motor stator current i u Convert analog signal to digital signal. The second phase current sampling control unit converts the permanent magnet synchronous m...

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Abstract

The invention discloses a device for closed-loop control of a permanent magnet synchronous motor, which comprises a current sampling recover module, a closed-loop feedback control module, a voltage coordinate inverse conversion module and a space vector pulse width modulation module. The optimized design of the whole control algorithm is realized by using the device for closed-loop control of a permanent magnet synchronous motor provided by the invention under the condition of ensuring motor control precision; moreover, a hardware circuit can be used for adjusting motor parameters and dead time according to a specific motor, thereby shortening the design period and flexibly applying the device for closed-loop control to various permanent magnet synchronous motors.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor control, in particular to a device for closed-loop control of permanent magnet synchronous motors. Background technique [0002] The idea of ​​Space Vector Pulse Width Modulation (SVPWM) was first proposed in the 1970s, and then the theory and algorithm of SVPWM have been greatly developed. At present, the SVPWM algorithm is one of the most popular implementation technologies for high-performance AC servo drive systems of permanent magnet synchronous motors. [0003] Because the closed-loop control algorithm based on space vector pulse width modulation used in the field of permanent magnet synchronous motor control is relatively complex, the current hardware circuit implementation is mainly realized on a high-performance digital signal processor (DSP). TI (Texas Instruments) has released 2000 series DSP chips for controlling motors, and ADI has released a series of dedicated chip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/14H02P21/16H02P21/18H02P21/20H02P27/12
Inventor 任雁鹏毕卉梁利平
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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