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Model predictive direct speed control with finite control set of PMSM-VSI drive systems

机译:具有PMSM-VSI驱动系统的有限控制集的模型预测直接速度控制

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摘要

Servo drives and drives for position control require a high dynamic on speed control. In this paper, Model Predictive Direct Speed Control (MPDSC) is proposed which overcomes limitations of cascaded linear controllers. The novel concept predicts the future current and speed states in discrete steps and it selects plant inputs which depends mainly on the predicted speed error. Secondary control objectives, such as maximum torque per ampere tracking are included. MPDSC uses the finite control set approach which makes it suitable for online predictions with a prediction horizon of a few sample periods. The concept has been implemented and verified by simulation. The overall control behavior is evaluated applying reference and disturbance steps to the system, where MPDSC shows promising results. A solution for disturbance (e.g. load toque) handling is proposed and the effectiveness to avoid control offsets is shown. Furthermore, the dynamic performance and the steady-state behavior of MPDSC is evaluated and discussed.
机译:伺服驱动器和用于位置控制的驱动器需要高动态速度控制。本文提出了模型预测直接速度控制(MPDSC),它克服了级联线性控制器的局限性。这个新颖的概念以离散的步长预测未来的电流和速度状态,并选择主要取决于预测的速度误差的设备输入。包括次级控制目标,例如每安培跟踪的最大扭矩。 MPDSC使用有限控制集方法,使其适合具有几个采样周期的预测范围的在线预测。该概念已通过仿真实现并得到验证。通过对系统应用参考和扰动步骤来评估总体控制行为,其中MPDSC显示出可喜的结果。提出了一种解决干扰(例如负载转矩)的解决方案,并且示出了避免控制偏移的有效性。此外,对MPDSC的动态性能和稳态行为进行了评估和讨论。

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