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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  • Abstract
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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

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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