Analysis of Sliding-Mode-Controlled Boost Converters with Mixed Loads
- Resource Type
- Conference
- Authors
- Lin, Hanqing; Ebrahimi, Seyyedmilad; Mahdavyfakhr, Mohammad; Jatskevich, Juri
- Source
- 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL) Control and Modeling for Power Electronics (COMPEL), 2020 IEEE 21st Workshop on. :1-8 Nov, 2020
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Signal Processing and Analysis
Trajectory
Stability analysis
Load modeling
Steady-state
Asymptotic stability
Power system stability
Mathematical model
Boost converter
constant power load (CPL)
load estimation
sliding-mode control (SMC)
small-signal modeling
- Language
This paper analyzes sliding-mode-controlled boost converters supplying a mix of resistive and constant power loads. The conventional sliding-mode control applied to the mixed load system is first analyzed: the hitting and existence conditions are examined and a closed-loop small-signal model is developed. The stability condition is established in terms of the sliding coefficient and load composition. By exploiting the stability condition, a new adaptive sliding-mode controller featuring an adjustable sliding coefficient and a load estimation technique is proposed. The proposed control exhibits faster dynamic response and improved stability compared with the conventional approach. Simulation studies and experimental results using real-time hardware-in-the-loop simulator validate the effectiveness of the proposed control.