abstract

• This paper solves the buck–boost converter operation problem in the discontinuous conduction mode and the feeding a DC bus of a combined battery/solar-powered electric vehicle grid. Since the sun’s radiation has a very important effect on the performance of photovoltaic solar modules due to its continuous variation, the main task of the system under study is the regulation of the output voltage from an MPPT system located at the output of the panels in order to obtain a DC bus voltage that is fixed to 24 V. This is ensured via a double-loop scheme, where the current inner loop relies on sliding-mode control; meanwhile, the outer voltage loop considers a proportional– integral action. Additionally, the current loop implements an adaptive hysteresis logic in order to operate at a fixed frequency. The closed-loop system’s performance is checked via numerical results with respect to step changes in the load, input voltage, and output voltage reference variations. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

authors

• González I.
• Langarica Córdoba Diego
• Ramirez-Rivera V.M.

publication date

• 2021-01-01

funding provided via

• 2015-01-786  Grant

published in

• Energies  Journal

keywords

• Buck–boost converter; DC/DC power converters; Discontinuous conduction mode; Electric vehicles; Proportional–integral control; Sliding-mode control Closed loop systems; Electric lines; Electric machine control; Electric power system control; Electric vehicles; Photovoltaic effects; Sliding mode control; Solar power generation; Buck/boost converters; DC/DC power converters; Discontinuous conduction mode; Operation problem; Output voltages; Performance; Proportional-integral control; Sliding mode controller; Sliding-mode control; Vehicle applications; DC-DC converters

Digital Object Identifier (DOI)

• 10.3390/en14206785

PubMed ID

start page

end page

volume

• 14

issue

• 20