An arc-based speed control method for ultra-high-speed permanent magnet synchronous motors

Abstract

The invention relates to a method of controlling the speed of a super-speed permanent magnet synchronous motor based on an ARC (Adaptive Robust Controller). The design of an ARC includes the steps as follows: building a mathematical model of a motor, converting the model into a state equation, and making relevant assumptions; designing a motor speed loop, a torque loop and a flux loop, and calculating the voltage control quantity; and applying the voltage control quantity to an SVPWM (Space Vector Pulse Width Modulation) module to control the speed of the motor. The robustness and control precision of a motor system are improved. The speed of a super-speed permanent magnet synchronous motor can be controlled stably and reliably.

Description

technical field [0001] The invention belongs to the technical field of motor intelligent control, in particular to an ARC-based ultra-high-speed permanent magnet synchronous motor speed control method. Background technique [0002] Modern industry has played a key role in supporting the development of the whole society and the national economy. With the development of science and technology, ultra-high-speed machining and ultra-precision machining have become the two major development directions of the future industry, which requires extremely high productivity and processing Quality, ordinary motors cannot meet these processing requirements, and people's demand for ultra-high-speed motors is increasing day by day. Its applications in industrial manufacturing, aerospace, energy, medical and national defense are becoming more and more extensive, and it has broad application prospects. Ultra-high-speed permanent magnet synchronous motor and its drive control technology have be...

AI Technical Summary

Problems solved by technology

[0003] At present, in actual engineering, traditional PID controllers are often used in ultra-high-speed permanent magnet synchronous motor control systems, but traditional PID controllers are suitable for low-order linear systems, and for strong coupling and high-order nonlinear systems such as ultra-high-speed motors For complex systems, it is difficult to achieve high-performance control indicators

Because the load torque disturbance of the motor at ultra-high speed, and the accuracy of the speed estimation under the sensorless technology increases the disturbance of the system, it will affect the stability of the motor speed; at the same time, the temperature of the motor at high speed The rise makes parameters such as resistance and inductance change. The uncertainty of these parameters has a significant impact on the dynamics and motion characteristics of ultra-high-speed motors, which in turn affects the overall performance of motor control.

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