摘要
针对传统的直接转矩控制(DTC)转矩脉动大、开关频率不恒定等问题,在分析数学模型的基础上,提出了一种基于空间矢量脉宽调制(SVPWM)技术的新型智能直接转矩控制系统,并利用Matlab仿真软件建立了系统模型。系统采用经遗传算法优化后的模糊控制器调节磁链和转矩,逆变器由SVPWM控制。结果表明,该直接转矩控制系统设计是正确的,并能有效减小磁链和转矩脉动,改善控制系统的性能。
To solve the problems of large torque ripple and inconstant inverter switching frequency in the conventional direct torque control(DTC),a novel and intelligent DTC method using space vector pulse width modulation(SVPWM)was proposed based on the analysis of conventional DTC model and modeled in the Matlab.Two genetic algorithm optimization of fuzzy controller regulate the flux and torque respectively and the inverter was controlled by the SVPWM technique in the proposed DTC system.Simulation results showed t...
出处
《微电机》
北大核心
2009年第1期36-40,共5页
Micromotors
关键词
直接转矩控制
空间矢量脉宽调制
模糊控制
遗传算法
感应电动机
Direct torque control
Space vector pulse width modulation
Fuzzy control
Genetic algorithms
Induction motor
