On the benefit of long-horizon direct model predictive control for drives with LC filters
On the benefit of long-horizon direct model predictive control for drives with LC filters
复制标题
关于带有 LC 滤波器的驱动器的长视野直接模型预测控制的优势
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
R. Kennel
中科院分区：
文献类型：
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作者：
T. Geyer;P. Karamanakos;R. Kennel
尽管直接模型预测控制(MPC)方案在电力电子应用中几乎只使用1的预测范围，但使用更长的范围可以提供显著的性能优势。本文针对一个由三电平逆变器、LC滤波器和感应电机组成的中压变速传动系统强调了这一点。该MPC控制器通过控制逆变器的开关位置，同时调节逆变器电流、电容电压和定子电流。如将显示的那样，扩展预测范围显著地减少了由于滤波器共振引起的振荡。对于足够长的视距，例如10个，在较低的器件开关频率下可以实现较低的定子电流总谐波失真。不需要额外的主动阻尼环，增加了所提出的控制方案的概念简单性。
Even though direct model predictive control (MPC) schemes almost exclusively use a prediction horizon of one in power electronics applications, the use of longer horizons offers significant performance benefits. This statement is underlined in this paper for a medium-voltage variable speed drive system, which consists of a three-level inverter, an LC filter and an induction machine. The proposed MPC controller simultaneously regulates the inverter current, capacitor voltage and stator current along given references, by manipulating the switch positions of the inverter. As will be shown, extending the prediction horizon significantly reduces the oscillations due to the filter resonance. For sufficiently long horizons, such as ten, low total harmonic distortions of the stator current can be achieved at low device switching frequencies. An additional active damping loop is not required, adding to the conceptual simplicity of the proposed control scheme.