发布时间：2014-10-14 来源：人大经济论坛

目录 摘要I AbstractII 1 前 言1 2 三相异步电机变频调速3 2.1 从额定频率向下调速4 2.2 从额定频率往上调6 3 三相异步电机串电阻调速8 4 定子调压调速方法11 5 基于Matlab的异步电动机矢量控制系统的仿真14 5.1 电力系统模块库的运行机理和应用14 5.2 异步电动机矢量控制原理14 5.5 异步电机转差型矢量控制系统仿真22 6 结 论25 致 谢26 参考文献27 摘要 在分析交流异步电机数学模型的基础上，提出了交流异步电机控制系统仿真建模的新方法。在Matlab/Simulink 中，建立独立的功能模块，如电机本体模块、矢量控制模块、速度控制模块、电流滞环控制模块等，再进行功能模块的有机整合，搭建交流异步电机控制系统的仿真模型。系统采用双闭环控制：速度环采用PI 控制，电流环采用电流滞环控制。仿真结果证明了该方法的合理性、有效性，为实际电机控制系统的设计和调试提供了新的思路。因其结构简单、可靠性高、性能优良、输出转矩大等特点，交流异步电机应用广泛，且随着交流异步电机应用领域的不断拓宽，对电机控制系统的设计要求越来越高，既要考虑成本低廉、控制算法合理，又需兼顾控制性能好、开发周期短等特点。因此，如何建立有效的交流异步电机控制系统的仿真模型成为电机控制算法设计人员迫切需要解决的关键问题。 关键词：交流异步电机；仿真建模；Matlab；矢量控制 Abstract Based on the mathematical model of AC asynchronism motor, a novel method for modeling and simulation of AC asynchronism motor control system in Matlab has been proposed. In Matlab/Simulink, the independent functional blocks, such as Moter model block, Vector control block, Speed controller block, and Hysteresis current controller block etc, have been modeled. By the organic combination of these blocks, the model of control system can be established easily. In the double loop of control system, a PI controller is adopted in the speed loop and a hyteresis current controller is adopted in the current loop. The reasonability and validity have been testified by the simulation results and this novel method offers a new thought way for designing and debugging actual motors. Keywords: AC asynchronism motor; modeling and simulation; Matlab; vector control