摘要
研究了一种针对两相永磁同步电机(PMSM)无传感驱动策略的全阶自适应转速观测器。在驱动中,电机由具有公共直流供电的两相八开关逆变器提供可控交流电压。所设计的电机转速观测器利用了永磁同步电机的定子电流模型和磁链数学模型。为了估计电机转速,通过定义的一个李雅普诺夫不等式推导并证明得到一个自适应转速估计率。所设计的观测器可以有效估计电机的转速并具有较高的精度。同时,通过观测器可以计算得到电机磁链。仿真结论进一步证明了所提出的方法的可行性和有效性。
A full order adaptive speed observer for sensorless two- phase permanent magnet synchronous motor （PMSM） drives was investigated. In the drives, the PMSM was fed by a two-phase eight-switch inverter,which has a com- mon DC power supply. In the designed observer, a current model and a stator flux model were used to achieve the main structure of the designed observer. To estimate the speed, a Lyapunov inequality was introduced to derive and prove an adap- tive speed estimation law. The stator flux was also estimated accurately. The simulation results validate the feasibility and effectiveness of the proposed speed adaptive observer.
出处
《微特电机》
北大核心
2013年第5期19-22,共4页
Small & Special Electrical Machines
关键词
自适应转速观测器
两相
永磁同步电机
八开关逆变器
adaptive speed observer
two-phase
permanent magnet synchronous motor
eight-switch inverter
