Four-quadrant position sensorless control in SRM drives over the entire speed range
Four-quadrant position sensorless control in SRM drives over the entire speed range
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DOI：
10.1109/tpel.2004.839817
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发表时间：
2005-01
影响因子：
6.7
通讯作者：
Babak Fahimi;Ali Emadi;R. B. Sepe
中科院分区：
文献类型：
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作者：
Babak Fahimi;Ali Emadi;R. B. Sepe
在开关磁阻电动机（SRM）驱动系统的最优控制中，励磁与转子位置的正确同步是必不可少的。为了避免由外部位置传感器引起的额外成本、尺寸和不可靠性，可以直接监测SRM的磁状态以检测换向时刻。SRM的磁状态与转子位置之间的一一对应消除了对转子位置的显式访问的需要。为了在整个速度范围内获得良好的精度，有必要对无传感器策略的结构进行有根据的修改。这是由于操作区域对SRM的动态行为的影响。此外，将SRM技术引入工业和家庭应用已经提高了对SRM驱动器的四象限操作的需求。本文介绍了一系列的战略，是必要的，以适应这一要求的传感器格式。我们的实验结果表明，在四象限SRM驱动器的高档无传感器操作是可能的，可以集成在各种应用。
Proper synchronization of the excitation with respect to the rotor position is essential in optimal control of switched reluctance motor (SRM) drives. To avoid additional cost, size, and unreliability caused by the external position sensors, magnetic status of the SRM can be directly monitored to detect commutation instants. A one-to-one correspondence between magnetic status of the SRM and rotor position removes the need for an explicit access to the rotor position. In order to obtain a good precision over the entire speed range, educated modifications on the structure of the sensorless strategy is necessary. This is due to the impact of the operational regions on dynamic behavior of the SRM. In addition, introduction of SRM technology to industrial and domestic applications has raised the need for four-quadrant operation of the SRM drives. The present paper introduces a range of strategies that are necessary to accommodate this requirement in a sensorless format. Our experimental findings indicate that high-grade sensorless operation in a four-quadrant SRM drive is possible and can be integrated in a variety of applications.