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Multi-functional model predictive control with mutual influence elimination for three-phase AC/DC converters in energy conversion
Authors
L Li
D Lu
X Shi
J Zhu
Publication date
1 January 2019
Publisher
'MDPI AG'
Doi
Cite
Abstract
© 2019 by the authors. Conventional model predictive control (MPC)-based direct power control of the three-phase full-bridge AC/DC converter usually suffers from the parametric coupling between active and reactive powers. A reference change of either the active or reactive power will influence the other, deteriorating the dynamic-state performance. In addition, the steady-state performance affected by one-step-delay arising from computation and communication processes in the digital implementation should be improved in consideration of switching frequency reduction. In combination with the proposed novel mutual influence elimination constraint, this paper proposes the multi-functional MPC for three-phase full-bridge AC/DC converters to improve both the steady and dynamic performances simultaneously. It has various advantages such as one-step-delay compensation, power ripple reduction, and switching frequency reduction for steady-state performance as well as mutual influence elimination for dynamic capability. The simulation and experimental results are obtained to verify the effectiveness of the proposed method
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OPUS - University of Technology Sydney
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Multidisciplinary Digital Publishing Institute
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