Timing control system and method for non-salient pole permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and control system, applied in control system, single motor speed/torque control, vector control system, etc., can solve problems such as increasing the hardware cost of drive control system

Active Publication Date: 2009-12-30
北京和利时电机技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, this control strategy must require motor current measurement feedback, that is, corresponding current

Method used

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  • Timing control system and method for non-salient pole permanent magnet synchronous motor
  • Timing control system and method for non-salient pole permanent magnet synchronous motor
  • Timing control system and method for non-salient pole permanent magnet synchronous motor

Examples

Experimental program
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Embodiment 1

[0085] Embodiment 1, a speed regulation control system of a hidden pole type permanent magnet synchronous motor, such as figure 1 As shown, it includes: proportional integral differential unit PID, Park inverse transform Inverse Park unit, space voltage vector pulse width modulation algorithm SVPWM unit, voltage source inverter VSI, comparator, and measurement unit.

[0086] The measuring unit is used to measure the electrical angle position θ of the rotor of the hidden pole permanent magnet synchronous motor and the mechanical speed ω of the motor m .

[0087] In this embodiment, the measuring unit may include:

[0088] Position measurer, multiplier and differentiator.

[0089] The position measuring device is used to measure the mechanical angular position θ of the rotor m , respectively sent to the multiplier and differentiator; in this embodiment, the position measuring device can be, but not limited to, a code disc installed on the motor shaft end of the hidden pole pe...

Embodiment 2

[0107] Embodiment 2, a speed regulation control method of a hidden pole permanent magnet synchronous motor, comprising:

[0108] Measure the electrical angle position θ of the rotor of the hidden pole permanent magnet synchronous motor and the mechanical speed ω of the motor m ;

[0109] Get the preset target speed ω m * and ω m the difference;

[0110] Perform proportional, integral, and differential operations on the difference to obtain the q-axis voltage component command value u q * ;

[0111] According to θ for u d * and the u q * Perform PARK inverse transformation to obtain the voltage vector u on the stationary coordinate system α * and u β * ; Among them, the u d * is 0;

[0112] According to the voltage vector u α * and u β * , using the space voltage vector pulse width modulation algorithm to generate the pulse width signal of the power device;

[0113] Generate three-phase winding current i according to the pulse width signal of the power dev...

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Abstract

The invention discloses a timing control system and a method for a non-salient pole permanent magnet synchronous motor. The method comprises the following steps: the electrical angle position theta and the mechanical rotational speed omegam of a motor of a non-salient pole permanent magnet synchronous motor rotor are measured; the difference of a preset target rotational speed omegam<*> and omegam is obtained; the difference is performed with scale, integration and differential operation to obtain component instruction value uq<*> of q shaft voltage; voltage vectors ualpha<*> and ubeta<*> on a static coordinate system can be obtained by PARK inverse transformation of ud<*> and uq<*> by theta, wherein, ud<*> is zero; according to ualpha<*> and ubeta<*> of the voltage vector, a power device pulse-width signal can be generated by a space vector pulse width modulation (SVPWM) algorithm; according to the power device pulse-width signal, three-phase winding current is generated and is sent to the non-salient pole permanent magnet synchronous motor. The invention can realize speed loop no-current sensor vector control of the non-salient pole permanent magnet synchronous motor and lower hardware cost for timing.

Description

technical field [0001] The invention relates to the field of control systems, in particular to a speed regulation control system and method for a hidden pole permanent magnet synchronous motor. Background technique [0002] With the rapid development of rare earth permanent magnet materials, power electronics technology and motor control theory, permanent magnet synchronous motor (PMSM) has the advantages of high torque / inertia ratio, high power density, high efficiency, firmness and good maintainability. , has been increasingly widely used in textiles, chemical fibers, numerical control machine tools, industrial robots, aerospace and other fields. [0003] According to the structure of the permanent magnet synchronous motor, the permanent magnet synchronous motor is divided into two types: salient pole type and hidden pole type. In industrial applications, most permanent magnet synchronous motors are hidden pole motors. When the sine wave current control scheme is used to...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P21/00H02P27/06H02P21/18
Inventor 韩利何震球刘春燕夏燕兰
Owner 北京和利时电机技术有限公司
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