基于矩阵变换器的感应电机矢量控制系统

研究了一种基于矩阵变换器的感应电机矢量控制系统,该系统将矩阵变换器的优点与交流电机矢量控制的优点相结合,实现了感应电机的高性能调速.调速系统的控制策略由两大部分组成,即矩阵变换器的间接空间矢量调制策略和感应电机按转子磁场定向的双闭环矢量控制策略.为有效控制感应电机的定子电流,双闭环矢量控制策略中采用了一种基于反馈解耦及补偿的电流环控制策略,可对转矩电流和励磁电流进行有效解耦和准确调节.实验证明了控制策略的可行性和有效性.

Vector Control System of Induction Motor Fed by Matrix Converter

A matrix converter fed vector control system for induction motor drive is investigated.The svstern combines the advantages of matrix converter and vector control techniques to achieve high performance of induction motor control.The control strategy of the drive system contains two parts,the indirect space vector modulation strategy of the matrix converter and the rotor field-oriented dual closed loop vector control strategy.In order to control the stator current effectively,a feedback decoupling and compensation algorithm for stator current loop is adopted in the dual closed loop vector control strategy,which is able to achieve the effective decoupling and accurate regulation of torque current and flux CUITent.Simulation and experimental results validate the feasibility and effectiveness of the control strategy.