Variable Order Fractional-Order Sliding Mode Control of Boost Converters in DC Microgrid

Haohan WANG; Chaojun WU

doi:10.16513/j.2096-2185.DE.2308106

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Distributed Energy ›› 2023, Vol. 8 ›› Issue (1) : 49-56. DOI: 10.16513/j.2096-2185.DE.2308106

Application Technology

Variable Order Fractional-Order Sliding Mode Control of Boost Converters in DC Microgrid

Haohan WANG ,
Chaojun WU

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Abstract

To solve the problem of frequent fluctuations on the load side of power electronic Boost converter in DC microgrid, a novel variable order fractional-order non-singular terminal sliding mode control strategy (VO-FNTSMC) is designed to accurately and quickly respond to the disturbance. The control effect of the control strategy in the start-up phase and load change phase of the Boost converter is studied. The research results are experimentally verified by hardware in loop (HiL) method on the NI PXie-ModelingTech experimental platform. The results show that the general fractional control strategy has the advantages of smaller chattering and output error when the order of fractional calculus is 1; When the order is 1.4, it has the advantages of small overshoot and fast response. VO-FNTSMC integrates the advantages of the above two orders of fractional control, and has faster response speed, smaller overshoot, steady-state error and sliding mode chatter to the output voltage in the start-up stage and load change stage, and it has the advantage of fractional controller in different order regulation effect. It provides a deep research method of variable order for the application of fractional order control theory in the field of new energy power electronics.

Key words

fractional calculus / variable order fusion / nonlinear sliding mode control / DC microgrid / Boost converter

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Haohan WANG , Chaojun WU. Variable Order Fractional-Order Sliding Mode Control of Boost Converters in DC Microgrid[J]. Distributed Energy Resources. 2023, 8(1): 49-56 https://doi.org/10.16513/j.2096-2185.DE.2308106

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