Permanent magnet synchronous motor servo control method based on per unit value design

A permanent magnet synchronous motor, servo control technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problem of controller hardware circuit damage, servo control method can not work normally and so on

Active Publication Date: 2013-12-04
BEIJING INST OF SPACE LAUNCH TECH +1
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Once the parameter configuration is unreasonable, the servo control method wi

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  • Permanent magnet synchronous motor servo control method based on per unit value design
  • Permanent magnet synchronous motor servo control method based on per unit value design
  • Permanent magnet synchronous motor servo control method based on per unit value design

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[0034] The technical solutions of the present invention are further described in detail below.

[0035] In order to achieve this purpose, the technical scheme adopted by the present invention is: a permanent magnet synchronous motor servo control method based on per-unit value design, adopting the per-unit value design method, to each physical quantity in the mathematical model of the permanent magnet synchronous motor and The motor parameters are processed per unit. On the basis of not changing the form of the motor equation, the per-unit value system is used to simplify the software algorithm and improve the operation accuracy, and the physical quantities of the motor of various capacities are normalized by the per-unit value. The physical quantities of motors with different capacities and the parameter ranges of each regulator in the control system are roughly the same in the per-unit value system (the error range is within 20%). Therefore, the controller has parameter adap...

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Abstract

The invention belongs to the technical field of motor servo control, and particularly relates to a permanent magnet synchronous motor servo control method based on per unit value design. According to the permanent magnet synchronous motor servo control method based on the per unit value design, a per unit value design method and a vector control system are adopted; per unit processing is conducted on physical quantities and motor parameters of a permanent magnet synchronous motor, and normalization is conducted on physical quantities of motors with various capacities through a per unit value; the rotor field directional vector control technology is adopted in the motor servo control method, an outer ring is a position ring, a command value of a revolving speed ring is output, the feedback quantity of the revolving speed ring is a sampling value of a speed sensor, and a command value of motor electromagnetic torque is output; an inner ring is two current regulators of the d-axis and the q-axis, a corresponding pulse width modulation strategy is obtained according to a vector algorithm, an inverter is controlled to generate expected voltage, the motor is driven to generate corresponding electromagnetic torque, accurate control over the revolving speed and position of the motor is achieved, therefore, a position control mode, a revolving speed control mode and a torque control mode are achieved.

Description

technical field [0001] The invention belongs to the technical field of motor servo control, and in particular relates to a permanent magnet synchronous motor servo control method based on per unit value design. Background technique [0002] With the development of power electronics, microelectronics, sensor technology, motor permanent magnet materials and control theory, the research of AC servo system has achieved remarkable achievements, and its dynamic and static characteristics are already comparable to those of DC servo system. In the field of AC transmission, permanent magnet synchronous motors (Permanent Magnet Synchronous Motors, PMSM) have many advantages such as simple structure, small size, light weight, high efficiency, and high power density. Mature, making AC permanent magnet servo system has become the mainstream of AC servo system. [0003] However, the commonly used permanent magnet synchronous motor servo control method usually has a complicated parameter ...

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Application Information

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IPC IPC(8): H02P21/14
Inventor 骆志伟胡小龙曾华王建军欧阳松
Owner BEIJING INST OF SPACE LAUNCH TECH
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