PID control optimization of three-phase asynchronous motor variable frequency speed control system
三相异步电动机变频调速系统的PID控制优化

摘要

三相异步电动机广泛应用于工业生产中，其调速性能直接影响生产效率和设备的可靠性。为了实现精确、高效的速度控制，变频调速系统成为了主流的控制手段。传统PID控制在调节过程中存在一定的不足，如响应时间较长、过调节现象等。本文研究了PID控制在三相异步电动机变频调速系统中的优化方法，通过改进PID控制算法，结合实际运行特性，提出了一种基于遗传算法优化PID参数的方案。实验结果表明，优化后的PID控制器在调速精度、响应时间及系统稳定性方面表现出显著优势，能够有效提升变频调速系统的整体性能。

Abstract

Three-phase asynchronous motors are extensively utilized in industrial production, where their speed regulation performance directly impacts production efficiency and equipment reliability. To achieve precise and efficient speed control, variable frequency drive (VFD) systems have become the mainstream control method. Traditional PID control exhibits limitations such as prolonged response time and over-regulation during adjustment. This study investigates optimization methods for PID control in VFD systems for three-phase asynchronous motors. By refining the PID control algorithm and integrating practical operational characteristics, a genetic algorithm-based parameter optimization scheme is proposed. Experimental results demonstrate that the optimized PID controller demonstrates significant advantages in speed regulation accuracy, response time, and system stability, effectively enhancing the overall performance of VFD systems.