CAJ | 학술논문

基于交互式模型参考自适应理论提出了直接转矩控制的无速度传感器方案。参考模型和可调模型使用交互式MRAS方法，系统在电机的转速和定子电阻的辨识间切换。由于消除了纯积分和电机漏感对算法的影响，该法对电机在低速的工况下具有鲁棒性。对定子电阻的辨识可使得直接转矩控制的低速性能得到改善，提高磁链模型的输出精度。计算机仿真结果证明了方案的可行性。
기우교호식모형삼고자괄응이론제출료직접전구공제적무속도전감기방안。삼고모형화가조모형사용교호식MRAS방법，계통재전궤적전속화정자전조적변식간절환。유우소제료순적분화전궤루감대산법적영향，해법대전궤재저속적공황하구유로봉성。대정자전조적변식가사득직접전구공제적저속성능득도개선，제고자련모형적수출정도。계산궤방진결과증명료방안적가행성。
In order to satisfy good performance of AC drive,improve thereliabiligy to system.A mutual model reference adaptive system (MRAS) is proposed to implement a position sensorless direct torque control of an asynchronous machine.The reference model and adjustable model used in the mutual MRAS scheme are interchangeable.For the rotor speed estimation,one model is used as a reference model and another is the adjustable model.Pure integration and stator leakage inductance are removed from the reference model,resulting in robust performance in low and high speed ranges.For the stator resistance identification,the two models switch their roles.Being the scheme,the low speed performance of DTC is improved and the output accuracy of flux model is increased.Computer simulations are given to show its effectiveness.