A modified sliding‐mode controller‐based mode predictive control strategy for three‐phase rectifier,International Journal of Circuit Theory and Applications

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A modified sliding‐mode controller‐based mode predictive control strategy for three‐phase rectifier
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-08-07 , DOI: 10.1002/cta.2858
Meng Wang ₁ , Haoran Wang ₁ , Yanyan Shi ₁ , Minghui Shen ₂ , Jian Song ₃

Affiliation

In three‐phase pulse width modulation rectifiers, proportional integral (PI) has been used in voltage outer‐loop to obtain the active current reference when using the conventional model predictive control strategy. However, the performance of the dynamic response is poor as large step and longer settling time are required on the active power under the load variation. To cope with this problem, a sliding‐mode controller can be employed to replace the PI controller. Nevertheless, the sliding‐mode variable structure control is discontinuous which leads to the chattering problem. In this work, a novel control strategy which combines a simplified model predictive control and a modified sliding‐mode control is proposed and investigated. The proposed strategy is supposed to reduce the effect of unexpected disturbances such as the DC‐link voltage step and the load variation. Simulation and experiments have been conducted for validation. The results indicate that the proposed strategy is feasible and has excellent dynamic response. Furthermore, it is easy to design and implement.

中文翻译：

一种改进的基于滑模控制器的三相整流器模式预测控制策略

在三相脉宽调制整流器中，当使用常规模型预测控制策略时，已在电压外环中使用比例积分（PI）以获得有功电流参考。但是，动态响应的性能很差，因为在负载变化下有功功率需要较大的步幅和较长的建立时间。为解决此问题，可以使用滑模控制器代替PI控制器。然而，滑模变结构控制是不连续的，从而导致颤振问题。在这项工作中，提出并研究了一种新颖的控制策略，该策略结合了简化的模型预测控制和改进的滑模控制。建议的策略应减少意外干扰的影响，例如直流母线电压阶跃和负载变化。仿真和实验已经进行了验证。结果表明，所提出的策略是可行的，具有良好的动态响应。此外，它易于设计和实施。

更新日期：2020-08-07

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