基于无速度传感器的并联双感应电机矢量控制仿真研究

Vector Control Simulation Research of Parallel-Connected Dual Induction Motor Based on Speed Sensorless

对基于无速度传感器控制技术的单逆变器并联双感应电机矢量控制系统进行了仿真研究,由于自适应伪降阶观测器的极点不依赖于感应电机的转速,将其应用到磁链观测中,有利于提高转速和转矩的响应速度;给出了单逆变器控制并联双感应电机的直接转子磁场定向的矢量控制方案,并推导出旋转坐标系下励磁电流分量和转矩电流分量,构建其仿真模型,并对电机参数和负载不平衡情况进行了仿真分析.仿真结果表明在电机参数和负载不平衡情况下,系统具有良好的动、稳态性能.

This paper researches on vector control system of paralled-connected dual induction motor fed by single inverter based on speed sensorless.In order to improve response time of the rotor velocity and the torque,a adaptive pseudo-reduced observer is applied to estimate the rotor flux,because the polars of the observer is independent on the rotor speed of the induction motor.The scheme of vector control of direct field orientation of paralled-connected dual induction motor fed by single inverter is proposed.In the meantime,the magnetized current component and the torque current component are deduced.On the condition of unbalanced load torque and different motor parameter,the simulation model is established and analyzed.The results show that on the condition of unbalanced load torque and different motor parameter,the system has good dynamic and stable performance.