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DSP Based Control of Parallel DC-DC Boost Converters by Adaptive Fuzzy Sliding-Mode Control Scheme

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5 Author(s)
Li-Peng Yin ; Dept. of Mech. & Electro-Mech. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan ; Chi-Cheng Cheng ; Chih-Yung Chen ; Ming-Sheng Zheng
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An adaptive fuzzy sliding-mode (AFSM) control system is developed to control parallel DC-DC boost converters. The AFSM control system that combines a fuzzy adaptation technique with sliding mode control to enhance robustness and sliding performance in a class of uncertain multi-input multi-output (MIMO) nonlinear systems is proposed. Using an online adaptation scheme, a fuzzy sliding mode controller is used to approximate the equivalent control in neighborhood of the sliding manifold. The controller improves the dynamic performance of a parallel boost converter, the output voltage is robust against load disturbances and the output currents are very well equalized. Experimental results show that the proposed MIMO-AFSM control system is found to achieve favorable regulation performances even under load-resistance variations.

Published in:

Genetic and Evolutionary Computing (ICGEC), 2010 Fourth International Conference on

Date of Conference:

13-15 Dec. 2010