Fixed-frequency implementation of sliding-mode controllers for photovoltaic systems
| Autor: | Paula Andrea Ortiz Valencia, Carlos Andrés Ramos-Paja, Daniel Gonzalez Montoya |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Comparator Computer science 020209 energy Photovoltaic system 02 engineering and technology Semiconductor device Converters Noise (electronics) Sliding mode control Power (physics) General Energy 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Electronic engineering 0204 chemical engineering Voltage |
| Zdroj: | International Journal of Energy and Environmental Engineering. 10:287-305 |
| ISSN: | 2251-6832 2008-9163 |
| DOI: | 10.1007/s40095-019-0306-z |
| Popis: | Traditional implementation of sliding-mode controllers, based on hysteresis comparators, exhibits variable switching frequency. Such a condition makes it difficult to select the semiconductor devices, design the passive elements of dc/dc converters, and design the sensing filters usually adopted for removing the switching noise from currents and voltages. Those problems are always present in photovoltaic systems based on variable-frequency sliding-mode controllers. Therefore, this paper proposes an implementation methodology for sliding-mode controllers providing constant switching frequency, which is aimed for grid-connected photovoltaic applications. The proposed solution does not compromise the power production of the PV system, hence it provides the same PV power in comparison with the classical variable-frequency implementation. Finally, the performance and correct operation of the fixed-frequency implementation are demonstrated using both simulation and experimental results. |
| Databáze: | OpenAIRE |
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