Nonlinear controller for SEPIC with single variable to tune

Youssef El Haj; Vijay Sood; Ahmed Sheir; Ruth Milman

doi:10.59400/esc.v2i1.426

Nonlinear controller for SEPIC with single variable to tune

Youssef El Haj Department of Electrical and Computer Engineering, Ontario Tech University, Oshawa L1H 7K4, Canada
Vijay Sood Department of Electrical and Computer Engineering, Ontario Tech University, Oshawa L1H 7K4, Canada http://orcid.org/0000-0003-3859-3799
Ahmed Sheir Department of Electrical and Computer Engineering, Ontario Tech University, Oshawa L1H 7K4, Canada
Ruth Milman Department of Electrical and Computer Engineering, Ontario Tech University, Oshawa L1H 7K4, Canada

Article ID: 426

5297 Views, 1197 PDF Downloads

DOI: https://doi.org/10.59400/esc.v2i1.426

Keywords: SEPIC; ISMC; systematic design; nonlinear controller

Abstract

This work proposes a systematic approach to designing a novel integral sliding mode controller (ISMC) for a single-ended primary-inductor converter (SEPIC) with only one tunable parameter where the upper and lower bounds are derived. The designed surface results in minimal chattering behaviour at the output voltage as well as at the duty cycle and allows for operating the SEPIC at a fixed switching frequency. The proposed controller can withstand up to a 70% variation in the input voltage and 100% variation on the load side, in addition to superior performance for a cold start. The proposed controller and the corresponding mathematical formulation were simulated in a Simulink environment and experimentally tested via a scaled prototype. The proposed controller performance is also compared to Type II and integral Linear-Quadratic Regulators (LQR).

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Published

2024-01-29

How to Cite

Haj, Y. E., Sood, V., Sheir, A., & Milman, R. (2024). Nonlinear controller for SEPIC with single variable to tune. Energy Storage and Conversion, 2(1), 426. https://doi.org/10.59400/esc.v2i1.426

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