A Collaborated Multi-controller Strategy by Using L1 Adaptive Augmentation Control for Power-generation Systems with Uncertainties

  • Lei Pan Southeast University, China
  • Jiong Shen Southeast University
  • Chengyu Cao University of Connecticut
Keywords: L1 adaptive controller, linear controller, uncertainty, nonlinearity, power plants.

Abstract

For dealing with uncertain operation circumstances, a collaborated multi-controller strategy of the cascade architecture with a L1 adaptive augmentation controller and a conventional baseline controller is introduced to power-generation systems. For its arbitrarily close, fast, and robust tracking performance, the L1 adaptive output feedback controller is designed as the augmentation controller in the inner-loop to keep the nominal dynamics of the system in the overall operation scope. The robust PID controller and offset-free linear MPC controller are recommended as the available outer-loop baseline controllers to follow control commands. The closed-loop stability of the cascade control system is ensured. The simulation experiments on a benchmark nonlinear boiler-turbine generation model verify the greatly improved adaptation and robustness of the augmentation control system in the presence of unknown uncertainties. Additionally, it is easy to upgrade a conventional control system to this cascade one in practice because the add-in L1 adaptive augmentation controller influence little on the augmented system setup.

DOI: http://dx.doi.org/10.5755/j01.itc.44.3.8846

Author Biography

Lei Pan, Southeast University, China
Lei Pan is an associate professor with Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, China.
Published
2015-09-24
Section
Articles