基于最优开关表的永磁同步电机直接转矩控制技术

Direct Torque Control of Permanent Magnet Synchronous Motor Based on Optimal Switch Table

直接转矩控制(DTC)是继矢量控制技术之后发展起来的又一种新型的具有高性能的交流变频调速技术,本文详细介绍了直接转矩的控制原理,分析了磁链环和转矩环的控制机理,分析了每个空间电压矢量的选择原则,制作了最优电压矢量开关表,用Matlab仿真工具,搭建了基于最有开关表的直接转矩控制系统,仿真结果表明直接转矩控制有很好的转矩快速响应能力,具有高动态性能。

Direct torque control（DTC） is developed after vector control technology and a new type of high performance AC frequency conversion technology, this paper introduces the principle of direct torque control, analyzed the control mechanism of flux loop and torque loop, analyzes the selection principle of each space voltage vectors, making the optimal voltage vector switch table, using Matlab/Simulink simulation tools, set up the switch table for direct torque control system based on the simulation results show that the direct torque control torque has good quick response ability, high dynamic performance.