An approximation time optimal control approach for DC-DC buck converter
by Yonghui Chen; Keqiang Bai; Zhigui Liu
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 20, No. 3, 2021

Abstract: A new approach based on Time Optimal Control (TOC) method for DC-DC buck converter is presented. The switch curve of TOC for buck converter is obtained and is approximated by an analytic expression. Therefore, the switch function of the Approximation Time Optimal Control (ATOC) can easily adapt to changes in load and settings. The synthesis of converter controller is discussed in detail. Performance of the proposed method under a change in reference input voltage and load resistance was investigated. Simulation results show that the proposed method has better start-up response performance and load disturbance rejection than the Terminal Sliding Mode Control (TSMC) method.

Online publication date: Tue, 15-Jun-2021

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