摘要
在分析高频信号激励下永磁同步电机数学模型的基础上,提出了一种基于电机凸极跟踪的转子位置估算自检测方法;讨论了利用高频信号注入、外差法及转子位置跟踪观测器等转子位置检测原理,并应用这种位置检测方法建立了永磁同步电机无位置传感器矢量控制系统的仿真模型。仿真研究表明,上述凸极跟踪方法能在永磁同步电机全速范围(包括零速和极低转速)准确地观测出转子的位置,是一种基于传感器与电机集成概念的无传感器交流调速系统,具有较好的静、动态性能。
Based on the analyzing the mathematic model of a PM synchronous motor excited by a set of high-frequency signals, a novel rotor position self-estimation method was suggested in this paper on the basis of rotor saliency-tracking technology. Moreover, the principles of rotor position detection, such as high-frequency signal injection, heterodyning and the tracking observer of rotor position estimation, were all discussed and the simulation model for a sensorless vector control system of a PM synchronous motor was established using the proposed rotor position estimation method. Simulated results manifest that the proposed saliency-tracking scheme could be used in the whole speed region, including zero speed, to estimate the rotor position precisely, and the sensorless drive system, based on the integration concept of the sensor combined with the motor, possesses of proper speed-adjustable performance both in static and dynamic.
出处
《电工电能新技术》
CSCD
2004年第4期60-64,共5页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金资助项目(50237030)
