【摘要】 针对开关磁阻电机中位置传感器的引入用所带来的结构复杂程度以及系统的成本的提高、电机可靠性以及坚固性降低等问题,提出了一种新的基于滑模观测器的开关磁阻电机无位置传感器控制方法:采用五点法磁链模型,结合滑模观测器实现了转子位置无位置传感器控制。该方法以转速以及电机转子位置作为状态变量,以实际磁链以及估算磁链的偏差作为滑模面,构建出了滑模观测器,对转子位置进行了间接检测。然后利用Matlab仿真软件搭建出了12/8极开关磁阻电机的仿真模型,并在Simulink环境下对开关磁阻电机进行了仿真研究。研究结果表明,所给出的无位置传感器控制方法可以有效地估算出电机的转速以及转子的位置,测量得到的转子位置误差小,具有较好的鲁棒性以及抗干扰能力,动态性能较好。更多还原

【Abstract】 Aiming at the problem that the structure complexity was increased,and the cost of the system was raised,and the reliability was decreased by introduction of the position sensors of the switched reluctance motor,a new sensorless control based on sliding mode observer of switched reluctance motor was proposed: five point magnetic chain model was used,combining with sliding mode observer for rotor position sensorless control. In this method,the speed and position of rotor were taken as state variable and the deviation of measured flux linkage and estimated flux linkage was taken as sliding mode face,a sliding mode observer was constructed to detect the position of rotor indirectly.Then,12 /8 pole switched reluctance motor simulation model was built using Matlab simulation software,and simulation research on switched reluctance motor was carried out in Simulink environment. The results indicate that the sensorless control method can effectively estimate the speed and the position of the rotor: small measurement error of the position of the rotor,good robustness and anti-interference ability,also dynamic performance.更多还原