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Direct power control of electrical energy storage systems: A passivity-based PI approach.
- Source :
-
Electric Power Systems Research . Oct2019, Vol. 175, pN.PAG-N.PAG. 1p. - Publication Year :
- 2019
-
Abstract
- • A mathematical model for electrical energy storage systems based on direct power control is presented. • A PI controller design based on passivity theory for electrical energy storage systems is described. • An evaluation of the performance of the PI–PBC for electrical energy storage systems is done. This paper proposes a direct power control for electrical energy storage systems (EESS) in ac microgrids. This strategy allows managing instantaneous active and reactive power without using a conventional inner-loop current regulator and without a phase-locked loop, increasing the reliability of the system while reducing investment costs. PI passivity-based control (PI-PBC) is selected to control the direct power model of EESS. This is because their models exhibit a port-Hamiltonian formulation in open-loop, and PI-PBC exploits this formulation to design a PI controller, which guarantees global asymptotically stability in closed-loop in the sense of Lyapunov. Simulations tested the proposed model in a microgrid and compared with conventional vector oriented controls in a dq reference frame and a direct power model controlled via feedback linearization (FL). PI-PBC has a better performance than other two controllers in all considered scenarios. Simulation results have conducted through MATLAB/SIMULINK software by using the SimPowerSystem toolbox. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787796
- Volume :
- 175
- Database :
- Academic Search Index
- Journal :
- Electric Power Systems Research
- Publication Type :
- Academic Journal
- Accession number :
- 140979790
- Full Text :
- https://doi.org/10.1016/j.epsr.2019.105885