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Motor drive device, motor drive method and motor

A technology of motor drive and motor rotor, which is used in the control of electromechanical transmission, control of generators, motor-generator control, etc., can solve the problems of poor resistance to load disturbance, large torque ripple, and uncontrollable current.

Active Publication Date: 2015-09-09
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a motor drive device, method and motor, aiming at solving the problems of large torque ripple, uncontrollable current output to the motor and poor load disturbance resistance in the motor drive device in the prior art

Method used

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  • Motor drive device, motor drive method and motor
  • Motor drive device, motor drive method and motor
  • Motor drive device, motor drive method and motor

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Embodiment approach

[0120] Further, as Figure 5 As shown, an implementation of the voltage limiter 5 outputting the direct-axis voltage and the quadrature-axis voltage after voltage limiting is as follows:

[0121] The voltage limiter 5 performs voltage limiting on the direct-axis voltage component and the preset quadrature-axis voltage component according to the limiting voltage, and then performs coordinate transformation according to the position feedback signal to output the direct-axis voltage and the quadrature-axis voltage.

[0122] Another implementation of the voltage limiter 5 outputting the direct-axis voltage and the quadrature-axis voltage after voltage limiting is as follows:

[0123] The voltage limiter 5 performs the coordinate transformation according to the position feedback signal, and then performs voltage limiting on the direct-axis voltage component and the preset quadrature-axis voltage component according to the limiting voltage to output the direct-axis voltage and the q...

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Abstract

The present invention relates to the technical field of motor control, and provides a motor drive device, a motor drive method and a motor. The motor drive device comprises a rotary converter, a position calculator, a speed calculation module and a speed controller; and also comprises a voltage limit calculation module performing voltage limit calculation on a speed controller output signal and then outputting a limiting voltage; a first subtracter used for obtaining a direct axis current difference; a current controller outputting a direct-axis voltage component; a quadrature-axis voltage generation module used for outputting a preset quadrature-axis voltage component; a voltage limitator performing voltage amplitude limiting and coordinate transformation on the direct-axis voltage component and the preset quadrature-axis voltage component and then outputting direct-axis voltage and quadrature-axis voltage; and a PWM controller for converting the direct-axis voltage and the quadrature-axis voltage into three-phase alternating-current voltage. The limiting voltage serves as a limit of a drive device output voltage and a quadrature-axis voltage component value is set, thereby realizing limitation of the quadrature-axis current, and thus realizing control of motor current.

Description

technical field [0001] The present invention relates to the technical field of motor control, and in particular, to a motor driving device, method and motor. Background technique [0002] At present, brushless motors mainly use classical vector control schemes, such as figure 1 and figure 2 As shown, the motor drive device includes an upper computer control module and a lower computer control module, wherein the upper computer control module realizes the closed-loop speed control, and the lower computer control module realizes the speed regulation function, such as figure 1 As shown, the position calculation module 11 outputs a position feedback signal and a speed feedback signal, the speed calculation module 12 outputs the rotor electrical angular velocity according to the position feedback signal, and the speed controller 1 outputs an adjustment command to the quadrature axis current calculation module 3 according to the rotor electrical angular velocity, The direct-axi...

Claims

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Application Information

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IPC IPC(8): H02P6/10H02P6/16H02P21/00
Inventor 王超赵小安吴玉飞龚黎明
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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