Neural Network Based Model Predictive Controllers for Modular Multilevel Converters

Songda Wang; Tomislav Dragicevic; Yuan GaoRemus Teodorescu

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Neural Network Based Model Predictive Controllers for Modular Multilevel Converters

机译：Neural Network Based Model Predictive Controllers for Modular Multilevel Converters

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摘要

Modular multilevel converter (MMC) has attracted much attention for years due to its good performance in harmonics reduction and efficiency improvement. Model predictive control (MPC) based controllers are widely adopted for MMC because the control design is straightforward and different control objectives can be simply implemented in a cost function. However, the computational burden of MPC imposes limitations in the control implementation of MMC because of many possible switching states. To solve this, we design machine learning (ML) based controllers for MMC based on the data collection from the MPC algorithm. The ML models are trained to emulate the MPC controllers which can effectively reduce the computation burden of real-time control since the trained models are built with simple math functions that are not correlated with the complexity of the MPC algorithm. The ML method applied in this study is a neural network (NN) and there are two types of establishing ML controllers: NN regression and NN pattern recognition. Both are trained using the sampled data and tested in a real-time MMC system. A comparison of experimental results shows that NN regression has a much better control performance and lower computation burden than the NN pattern recognition.

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来源
《IEEE Transactions on Energy Conversion》 |2021年第2期|1562-1571|共10页
作者
Songda Wang; Tomislav Dragicevic; Yuan GaoRemus Teodorescu;
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作者单位

Department of Energy Technology, Aalborg University, Aalborg, Denmark;

Department of Electrical Engineering, Technical University of Denmark, Copenhagen, Denmark;

Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham, U.K.;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类电工技术;
关键词
Artificial neural networks; Computational modeling; Mathematical model; Cost function; Predictive control; Machine learning; Predictive models; Modular multilevel converter (MMC); model predictive control (MPC); control design; neural network (NN); pattern recognition;

Neural Network Based Model Predictive Controllers for Modular Multilevel Converters

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