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Finite-set model-based predictive control for flying-capacitor converters: cost function design and efficient FPGA implementation

Thomas Vyncke (UGent) , Steven Thielemans (UGent) and Jan Melkebeek (UGent)
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Abstract
Recently, there has been an increase in the use of finite-set model-based predictive control (FS-MBPC) for power-electronic converters. However, the computational burden for this control scheme is very high and often restrictive for a good implementation. This means that a suitable technology and design approach should be used. In this paper, the implementation of FS-MBPC for flying-capacitor converters in field-programmable gate arrays (FPGAs) is discussed. The control is fully implemented in programmable digital logic by using a high-level design tool. This allows us to obtain very good performances (both in control quality, speed, and hardware utilization) and have a flexible, modular control configuration. The good performance is obtained by exploiting the FPGA's strong points: parallelism and pipelining. Furthermore, an improved cost function for the voltage control of the flying capacitors is proposed in this paper. Typical cost functions result in tracking control for the flying-capacitor voltages, although this does not correspond with the desired system behavior. The improved cost function offers a capacitor voltage control that corresponds more closely with the desired behavior and adds a limitation on the capacitor voltage deviation. Furthermore, the selection of the weight factor in the cost function becomes less critical.
Keywords
programmable digital hardware, predictive control, model-based predictive control (MBPC), flying-capacitor converters (FCCs), Field-prgrammable gate array (FPGA) implementation, INVERTERS

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Chicago
Vyncke, Thomas, Steven Thielemans, and Jan Melkebeek. 2013. “Finite-set Model-based Predictive Control for Flying-capacitor Converters: Cost Function Design and Efficient FPGA Implementation.” Ieee Transactions on Industrial Informatics 9 (2): 1113–1121.
APA
Vyncke, T., Thielemans, S., & Melkebeek, J. (2013). Finite-set model-based predictive control for flying-capacitor converters: cost function design and efficient FPGA implementation. IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, 9(2), 1113–1121.
Vancouver
1.
Vyncke T, Thielemans S, Melkebeek J. Finite-set model-based predictive control for flying-capacitor converters: cost function design and efficient FPGA implementation. IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS. 2013;9(2):1113–21.
MLA
Vyncke, Thomas, Steven Thielemans, and Jan Melkebeek. “Finite-set Model-based Predictive Control for Flying-capacitor Converters: Cost Function Design and Efficient FPGA Implementation.” IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS 9.2 (2013): 1113–1121. Print.
@article{4166434,
  abstract     = {Recently, there has been an increase in the use of finite-set model-based predictive control (FS-MBPC) for power-electronic converters. However, the computational burden for this control scheme is very high and often restrictive for a good implementation. This means that a suitable technology and design approach should be used. In this paper, the implementation of FS-MBPC for flying-capacitor converters in field-programmable gate arrays (FPGAs) is discussed. The control is fully implemented in programmable digital logic by using a high-level design tool. This allows us to obtain very good performances (both in control quality, speed, and hardware utilization) and have a flexible, modular control configuration. The good performance is obtained by exploiting the FPGA's strong points: parallelism and pipelining. Furthermore, an improved cost function for the voltage control of the flying capacitors is proposed in this paper. Typical cost functions result in tracking control for the flying-capacitor voltages, although this does not correspond with the desired system behavior. The improved cost function offers a capacitor voltage control that corresponds more closely with the desired behavior and adds a limitation on the capacitor voltage deviation. Furthermore, the selection of the weight factor in the cost function becomes less critical.},
  author       = {Vyncke, Thomas and Thielemans, Steven and Melkebeek, Jan},
  issn         = {1551-3203},
  journal      = {IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS},
  keyword      = {programmable digital hardware,predictive control,model-based predictive control (MBPC),flying-capacitor converters (FCCs),Field-prgrammable gate array (FPGA) implementation,INVERTERS},
  language     = {eng},
  number       = {2},
  pages        = {1113--1121},
  title        = {Finite-set model-based predictive control for flying-capacitor converters: cost function design and efficient FPGA implementation},
  url          = {http://dx.doi.org/10.1109/TII.2012.2223707},
  volume       = {9},
  year         = {2013},
}

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