Alternating current permanent-magnet synchronous machine controller

A permanent magnet synchronous motor and controller technology, applied in AC motor control, single motor speed/torque control, control system and other directions, can solve the problem of low control accuracy, achieve stable control system, easy maintenance, and achieve constant rotation The effect of torque control

Inactive Publication Date: 2011-05-18
程基江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage is that the control precision is not high,

Method used

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  • Alternating current permanent-magnet synchronous machine controller
  • Alternating current permanent-magnet synchronous machine controller
  • Alternating current permanent-magnet synchronous machine controller

Examples

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Embodiment Construction

[0029] refer to figure 1 According to the AC permanent magnet synchronous motor controller provided by the present invention, it includes a DSP microprocessor (model: TMS320F243), a power changer, an AC permanent magnet synchronous motor, a position detector and a current detector, and the position detector and the current detector are used It is used to monitor the rotor position, rotor speed and phase current of the AC permanent magnet synchronous motor. When working, the position detector inputs the detected rotor position signal and rotor speed signal from the QEP unit of the DSP microprocessor, and the current detector sends them The detected current signal is input by the A / D conversion interface of the DSP microprocessor, and the DSP microprocessor calculates the given value of the current according to the input rotor position signal and rotor speed signal, and then compares it with the input current detection value. The corresponding control signal is obtained to contr...

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Abstract

The invention relates to an alternating current permanent-magnet synchronous machine controller which comprises a digital signal microprocessor (DSP), a power converter, an alternating current permanent-magnet synchronous machine, a position detector and a current detector, wherein the position detector inputs the detected rotor position signal and rotor speed signal of the alternating current permanent-magnet synchronous machine by a quadrature encoder pulse (QEP) unit of the DSP; the current detector inputs the detected current signal of the alternating current permanent-magnet synchronous machine by an analog to digital (A/D) conversion interface of the QEP of the DSP; the DSP calculates the given value of current according to the input rotor position signal and rotor speed signal, and compares the given value of current with the input detected value of current to obtain the corresponding control signal for controlling the width of the pulse-width modulation (PWM) pulse; and the PWM signal drives the alternating current permanent-magnet synchronous machine by the power converter. The invention has the advantages of compact and firm structure, simple circuit, low cost, reliable performance, stable operation, wide speed adjusting range, high efficiency, high accuracy and the like.

Description

Technical field: [0001] The invention relates to an AC permanent magnet synchronous motor controller, which can be used in electric vehicles, numerical control machine tools, industrial robots, air conditioners and other fields. Background technique: [0002] The controller is an essential part of the electric vehicle drive system, which determines whether the performance of the drive system is good or not. In the past ten years, it has mainly developed AC asynchronous motor controllers and brushless permanent magnet motor controllers. Compared with the original DC traction motor controller, it has obvious advantages, and its outstanding advantages are high efficiency, basically maintenance-free, and wide speed regulation range. Its research and development status and development trend are as follows. [0003] 1. Asynchronous motor controller [0004] The asynchronous motor controller is characterized by ruggedness, reliable operation, low torque ripple, low noise, no nee...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P6/16H02P27/06
Inventor 程基江
Owner 程基江
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