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arXiv 1209.1114eess.SYcs.SYmath.OC
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直线感应电机的速度跟踪 - 枚举非线性模型预测控制

Speed Tracking of a Linear Induction Motor - Enumerative Nonlinear Model Predictive Control

Beni-Suef University(贝尼苏韦夫大学);Linköping University(林雪平大学)

Jean Thomas, Anders Hansson

AI总结:

针对直接转矩控制在低速跟踪时开关频率过高和电流转矩脉动大的问题,提出一种直接控制逆变器开关的枚举非线性模型预测控制器,仿真表明其跟踪性能优异且平均开关频率降低约95%。

摘要:

直接转矩控制被认为是感应电机驱动速度和/或位置跟踪控制最有效的技术之一。然而,该控制方案存在几个缺点:开关频率可能超过逆变器的最大允许开关频率,并且电流和转矩的脉动,尤其是在低速跟踪时,可能过大。在本文中,我们提出了一种克服这些问题的新方法。所提出的控制器是一种模型预测控制器,它直接控制逆变器开关。它易于实时实现,并且优于所有先前的方法。仿真结果表明,新方法具有与其他方案一样好的跟踪特性,并且与经典直接转矩控制相比,平均逆变器开关频率降低了约95%。

英文摘要:

Direct torque control is considered as one of the most efficient techniques for speed and/or position tracking control of induction motor drives. However, this control scheme has several drawbacks: the switching frequency may exceed the maximum allowable switching frequency of the inverters, and the ripples in current and torque, especially at low speed tracking, may be too large. In this paper we propose a new approach that overcomes these problems. The suggested controller is a model predictive controller which directly controls the inverter switches. It is easy to implement in real time and it outperforms all previous approaches. Simulation results show that the new approach has as good tracking properties as any other scheme, and that it reduces the average inverter switching frequency about 95% as compared to classical direct torque control.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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