Journal
ISA TRANSACTIONS
Volume 73, Issue -, Pages 112-129Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2018.01.006
Keywords
Single inductor multiple output DC-DC converter; Robust decentralized controller; Parametric uncertainties; Pairing analysis; Effective relative gain array; Integral square error performance index
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This paper describes a novel robust decentralized control design methodology for a single inductor multiple output (SIMO) DC-DC converter. Based on a nominal multiple input multiple output (MIMO) plant model and performance requirements, a pairing input-output analysis is performed to select the suitable input to control each output aiming to attenuate the loop coupling. Thus, the plant uncertainty limits are selected and expressed in interval form with parameter values of the plant model. A single inductor dual output (SIDO) DC-DC buck converter board is developed for experimental tests. The experimental results show that the proposed methodology can maintain a desirable performance even in the presence of parametric uncertainties. Furthermore, the performance indexes calculated from experimental data show that the proposed methodology outperforms classical MIMO control techniques. (C) 2018 ISA. Published by Elsevier Ltd. All rights reserved.
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