Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

Jorge Luis Anderson Azzano, Jerónimo J. Moré and Paul F. Puleston
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Jorge Luis Anderson Azzano: Instituto LEICI, Facultad de Ingeniería UNLP—CONICET, B1900 La Plata, Argentina
Jerónimo J. Moré: Instituto LEICI, Facultad de Ingeniería UNLP—CONICET, B1900 La Plata, Argentina
Paul F. Puleston: Instituto LEICI, Facultad de Ingeniería UNLP—CONICET, B1900 La Plata, Argentina

Energies, 2019, vol. 12, issue 21, 1-19

Abstract: Microgrids are versatile systems for integration of renewable energy sources and non-conventional storage devices. Sliding Mode techniques grant excellent features of robustness controlling power conditioning systems, making them highly suitable for microgrid applications. However, problems may arise when a converter is set to behave as a Constant Power Load (CPL). These issues manifest in the stability of internal dynamics (or Zero Dynamics), which is determined by the input filter of the power module. In this paper, a special Lyapunov analysis is conducted to address the nonlinear internal dynamics of SM controlled power modules with CPL. It takes advantage of a Liérnad-type description, establishing stability conditions and providing a secure operation region. These conditions are translated into conductance and invariant region diagrams, turning them into tools for the design of power module filters.

Keywords: Lyapunov-based filter design; constant power load; Sliding Mode controlled power module; zero dynamics stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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