Apparatus for controlling high speed operation of motor and method thereof

A high-speed, current technology, applied in control systems, vector control systems, electrical components, etc., can solve problems such as memory and processing capacity limitations, difficulties, large amounts of data, and interpolation calculations

Inactive Publication Date: 2007-12-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, this method requires a large amount of data and interpolation calculations, so its application is limited by memory and processing power
[0009] Th

Method used

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  • Apparatus for controlling high speed operation of motor and method thereof
  • Apparatus for controlling high speed operation of motor and method thereof
  • Apparatus for controlling high speed operation of motor and method thereof

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Embodiment Construction

[0021] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0022] A preferred embodiment of a device and method for controlling a motor will be described in detail below with reference to FIGS. The entire operating range of the motor from low speed to high speed, providing a uniform estimate of the motor rotor position and rotor speed regardless of the gain adjustment of the PI regulator.

[0023] As shown in Figure 3, according to an embodiment of the present invention, the device for controlling the high-speed operation of the motor includes: a coordinate system (reference frame) converter 310, which receives the triangular coordinate voltage and the triangular coordinate current, and converts them into a static coordinate stator voltage and static coordinate stator current; the flux observer (fluxobserver) 320 receives the converted static coordinate current and static coordina...

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Abstract

A device and method for controlling high-speed operation of a motor, which control the high-speed operation of a motor by evaluating the rotor position and rotor speed of a synchronous motor, without the need for a PI (proportional plus integral) regulator, thereby eliminating user inconvenience and Ensures control of the rotor position and rotor speed of synchronous motors. The device includes: a coordinate system converter, which receives the triangular coordinate voltage and current, and converts them into static coordinate voltage and current; a magnetic flux observer, which receives the converted static coordinate voltage and current, and observes and outputs the stator magnetic flux ; a position estimator that receives the transformed static coordinate voltage and current and observed stator flux, and evaluates and outputs the rotor position; and a rotational speed estimator that receives the estimated rotor position, and evaluates and outputs the rotor rotational speed.

Description

technical field [0001] The present invention relates to a device and method for controlling high-speed operation of a motor, and more particularly, to a method for controlling high-speed operation of a motor by evaluating the rotor position and rotor speed of a synchronous motor without using a PI (proportional plus integral) regulator The device and its method, which eliminate the inconvenience of adjusting the gain of the PI regulator to the user, and ensure the control of the rotor speed and rotor position of the synchronous motor. Background technique [0002] Typically, rotor position and rotor speed should be evaluated for sensor-less vector control of a permanent magnet synchronous motor (PMSM). The position of the motor is necessary for coordinate transformation, while the speed of the motor is necessary for speed control. [0003] In order to evaluate the rotor speed and rotor position, the rotor position and rotor speed estimator according to the prior art is comp...

Claims

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Application Information

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IPC IPC(8): H02P6/16
CPCH02P21/13H02P21/141H02P21/146H02P21/18H02P21/00H02P21/14
Inventor 李吉洙李炅勋郑达浩
Owner LG ELECTRONICS INC
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