CAJ | 학술논문

在分析永磁同步电机电机参数变化导致定子磁链观测器输出误差变化的基础上,研究了永磁同步电机在一定工作情况下呈现混沌运动,根据PMSM的数学模型得出其混沌特性曲线.由于常规的直接转矩控制大多采用滞环比较器,容易产生转矩脉动,导致逆变器开关频率过高;与此同时,常规的PI速度调节器的跟踪精度不高;鉴于此,采用双模糊控制器建立了具有混沌特性的永磁同步电机模型.仿真结果证明:永磁同步电机直接转矩控制系统双模糊控制对其混沌特性具有良好的控制效果,系统的动态和静态性能也得到改善,可以减少转矩和磁通纹波,并能提高系统的响应速度.
재분석영자동보전궤전궤삼수변화도치정자자련관측기수출오차변화적기출상,연구료영자동보전궤재일정공작정황하정현혼돈운동,근거PMSM적수학모형득출기혼돈특성곡선.유우상규적직접전구공제대다채용체배비교기,용역산생전구맥동,도치역변기개관빈솔과고;여차동시,상규적PI속도조절기적근종정도불고;감우차,채용쌍모호공제기건립료구유혼돈특성적영자동보전궤모형.방진결과증명:영자동보전궤직접전구공제계통쌍모호공제대기혼돈특성구유량호적공제효과,계통적동태화정태성능야득도개선,가이감소전구화자통문파,병능제고계통적향응속도.
The chaotic phenomena of a permanent magnet synchronous motor (PMSM) under certain circumstances were studied based on the error analysis of the stator flux observer output by parameter change of the permanent magnet synchronous motor,PMSM model with chaotic features was built,and the chaotic curves were gained based on PMSM mathematic model. A dual fuzzy controller was designed for the direct torque control (DTC) system of the PMSM. The simulation results prove that control effect on the chaotic phenomenon of the PMSM-DTC system by the dual fuzzy control is good,and the dynamic and static performances of the PMSM-DTC system will be improved. Also the ripple of torque and flux can be reduced and the response speed can be improved.