Fixed-Time Sliding Mode Control for NPC Converters With Improved Disturbance Rejection Performance
Harbin Institute of Technology · Universidad de Sevilla
Abstract
This article explores a novel variable-gain super-twisting observer (VGSTO)-based fixed-time sliding mode control (FTSMC) method for the dc-link voltage control of three-level neutral-point-clamped (NPC) active front-end (AFE) converters. Among the literature review, the super-twisting observer is an attractive solution for disturbance estimation. However, its convergence velocity is limited when the trajectories are far away from the origin. To overcome this drawback, a novel VGSTO is proposed in this work, whose innovation lies in adopting dynamically adapted exponent coefficients in the conventional super-twisting observer; thus, it turns into a linear observer outside a ball around the origin, which…
Citation impact
- FWCI
- 223.10
- Percentile
- 100%
- References
- 34
Authors
7Topics & keywords
- Converters
- Control theory (sociology)
- Disturbance (geology)
- Sliding mode control
- Mode (computer interface)
- Control (management)
- Computer science
- Engineering
- Affordable and clean energy