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Journal of Control Science and Engineering
Volume 2016, Article ID 9478387, 10 pages
http://dx.doi.org/10.1155/2016/9478387
Research Article

Simplified Finite Set Model Predictive Control Strategy of Grid-Connected Cascade H-Bridge Converter

1Department of Electrical Automation, Shanghai Maritime University, Shanghai 201306, China
2Economic Research Institute, State Grid Jiangsu Electric Power Company, Nanjing 210000, China

Received 2 February 2016; Revised 21 April 2016; Accepted 8 May 2016

Academic Editor: Michela Robba

Copyright © 2016 Jingang Han et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Finite set model predictive control (FS-MPC) has become a promising control technology in power converter, because of the advantages of good dynamic response and accurate current tracking capability. In real-time control process, the conventional FS-MPC strategy requires more time for prediction and optimization. As a result, there will be a certain delay between sampling and output. In order to reduce the amount of calculation and overcome the adverse effect of the delay on the system performance, this paper presents a simplified FS-MPC method. Firstly, adjacent levels method is used to reduce the amount of the calculation, and then two-step FS-MPC is adopted to compensate the calculation delay. The control strategy is validated by the simulation and experimental results of a grid-connected cascaded H-bridge converter.