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

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 ...

AI Technical Summary

Problems solved by technology

Once the parameter configuration is unreasonable, the servo control method will not work normally, and even cause damage to the controller hardware circuit

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