PV Cell Characteristic Extraction to Verify Power Transfer Efficiency in Indoor Harvesting System
| Autor: | Perilli, L., Perugini, L., Pizzotti, M., Scarselli, E. Franchi, Canegallo, R. |
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| Přispěvatelé: | Perilli, L., Pizzotti, M., Perugini, L., Franchi Scarselli, E, Canegallo, R. |
| Rok vydání: | 2018 |
| Předmět: |
energy harvesting
Operating point Maximum power principle Computer science 020208 electrical & electronic engineering Photovoltaic system 02 engineering and technology Computer Graphics and Computer-Aided Design 7. Clean energy Maximum power point tracking low power electronic 020202 computer hardware & architecture Power (physics) photovoltaic cell Computer Networks and Communication maximum power point tracker Low-power electronics DC-DC power conversion 0202 electrical engineering electronic engineering information engineering Electronic engineering Maximum power transfer theorem Voltage |
| Zdroj: | CAMAD 2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD) |
| DOI: | 10.1109/camad.2018.8515002 |
| Popis: | A method is proposed to verify the efficiency of low-power harvesting systems based on Photovoltaic (PV) cells for indoor applications and a Fractional Open-Circuit Voltage (FOCV) technique to track the Maximum Power Point (MPP). It relies on an algorithm to reconstruct the PV cell Power versus Voltage (P-V) characteristic measuring the open circuit voltage and the voltage/current operating point but not the short-circuit current as required by state-of-the-art algorithms. This way the characteristic is reconstructed starting from the two values corresponding to standard operation modes of dc-dc converters implementing the FOCV Maximum Power Point Tracking (MPPT) technique. The method is applied to a prototype system: an external board is connected between the transducer and the dc-dc converter to measure the open circuit voltage and the voltage/current operating values. Experimental comparisons between the reconstructed and the measured P-V characteristics validate the reconstruction algorithm. Experimental results show the method is able to clearly identify the error between the transducer operating point and the one corresponding to the maximum power transfer, whilst also suggesting corrective action on the programmable factor of the FOCV technique. The proposed technique therefore provides a possible way of estimating MPPT efficiency without sampling the full P-V characteristic. |
| Databáze: | OpenAIRE |
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