Integration of PV Arrays in DC Power Grids via Unidirectional Boost Converters: A PBC Approach

This paper presents a general control design for photovoltaic systems integrated with Direct-Current power grids by using an unidirectional boost converter. Passivity-based control (PBC) theory is used as a control technique since the dynamical model of the boost converter has an intrinsically port-Hamiltonian structure, where PBC theory is based upon, to design stable controllers via Lyapunov stability theory. To control the photovoltaic solar system, a current control mode is used, since photovoltaic cells are mathematically modelled as current sources, where the photo-current determined by the solar irradiance and the cell's temperature. Proportional and proportional-integral passivity-based controllers are developed to operate the boost converter under current control mode to extract the maximum power available in the PV array. Simulation results are conducted via MATLAB/ODE-package software. © 2018 IEEE.

• Fecha de publicación: 2018
• Institución: Universidad Tecnológica de Bolívar
• Repositorio: Repositorio Institucional UTB
• Idioma: eng
• OAI Identifier: oai:repositorio.utb.edu.co:20.500.12585/8856
• Acceso en línea: https://hdl.handle.net/20.500.12585/8856
• Palabra clave: Boost converter; Current control mode; Lyapunov stability; Passivity-based control theory; Pphotovoltaic arrays; Control theory; Controllers; DC-DC converters; Electric current control; Electric power transmission networks; Hamiltonians; MATLAB; Photoelectrochemical cells; Photovoltaic cells; Power control; Solar power generation; Two term control systems; Boost converter; Current control modes; Lyapunov stability; Passivity based control; Photovoltaic arrays; Electric power system control
• Rights: restrictedAccess
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/