Sensorless Direct Torque and Flux-Controlled IPM Synchronous Motor Drive at Very Low Speed Without Signal Injection
Sensorless Direct Torque and Flux-Controlled IPM Synchronous Motor Drive at Very Low Speed Without Signal Injection
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DOI：
10.1109/tie.2009.2030815
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发表时间：
2010
影响因子：
7.7
通讯作者：
G. Foo;M. F. Rahman
中科院分区：
文献类型：
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作者：
G. Foo;M. F. Rahman
提出了一种新型的无速度传感器直接转矩和磁链控制方案。该驱动器采用了一种新的定子磁链观测器的基础上扩展的转子磁链的概念。由于同时实施的静止和旋转的参考框架，建议的观察员不需要任何速度自适应，本质上是无传感器的。与速度自适应观测器不同，所提出的观测器不受速度估计误差的影响，因此，它在极低速度下的性能得到了显着改善。一种新的定子电阻估计器被纳入无传感器驱动器，以补偿定子电阻变化的影响。通过李雅普诺夫稳定性分析，保证了磁链观测器和定子电阻估计器的全局渐近稳定性。仿真和实验结果表明，在很低的速度，包括0和5 r/min，所提出的方法的有效性。
This paper proposes a novel speed-sensorless direct torque and flux control scheme for an interior permanent-magnet synchronous motor drive. The drive uses a new stator flux observer based on the extended rotor flux concept. Due to the simultaneous implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. A novel stator resistance estimator is incorporated into the sensorless drive to compensate the effects of stator resistance variation. The global asymptotic stabilities of both the flux observer and stator resistance estimator are guaranteed by the Lyapunov stability analysis. Simulation and experimental results at very low speeds, including 0 and 5 r/min, confirm the effectiveness of the proposed method.