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Algorithms 2018, 11(7), 92; https://doi.org/10.3390/a11070092

Predictive Current Control of Boost Three-Level and T-Type Inverters Cascaded in Wind Power Generation Systems

1
Electrical Engineering College, Yanshan University, Qinhuangdao 066004, China
2
The Department of Mechanical and Electronic Engineering, Bayin Guoleng Vocational and Technical College, Korla 841000, China
3
Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
*
Author to whom correspondence should be addressed.
Received: 7 May 2018 / Revised: 14 June 2018 / Accepted: 25 June 2018 / Published: 27 June 2018
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Abstract

A topology structure based on boost three-level converters (BTL converters) and T-type three-level inverters for a direct-drive wind turbine in a wind power generation system is proposed. In this structure, the generator-side control can be realized by the boost-TL converter. Compared with the conventional boost converter, the boost-TL converter has a low inductor current ripple, which reduces the torque ripple of the generator, increases the converter’s capacity, and minimizes switching losses. The boost-TL converter can boost the DC output from the rectifier at low speeds. The principles of the boost-TL converter and the T-type three-level inverter are separately introduced. Based on the cascaded structure of the proposed BTL converter and three-level inverter, a model predictive current control (MPCC) method is adopted, and the optimization of the MPCC is presented. The prediction model is derived, and the simulation and experimental research are carried out. The results show that the algorithm based on the proposed cascaded structure is feasible and superior. View Full-Text
Keywords: boost three-level converter; T-type three-level inverter; model predictive control; cascade; wind power generation system boost three-level converter; T-type three-level inverter; model predictive control; cascade; wind power generation system
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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. (CC BY 4.0).
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Yang, G.; Yi, H.; Chai, C.; Huang, B.; Zhang, Y.; Chen, Z. Predictive Current Control of Boost Three-Level and T-Type Inverters Cascaded in Wind Power Generation Systems. Algorithms 2018, 11, 92.

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