Optimal power point tracking for PV-systems with retrofitted energy storage systems
- This paper presents a control strategy for optimal utilization of photovoltaic (PV) generated power in conjunction with an Energy Storage System (ESS). The ESS is specifically designed to be retrofitted into existing PV systems in an end-user application. It can be attached in parallel to the PV system and connects to existing DC/AC inverters. In particular, the study covers the impact such a modification has on the output power of existing PV panels. A distinct degradation of PV output power was found due to the different power characteristics of PV panel and ESS. To overcome such degradation a novel feedback system is proposed. The feedback system continuously modifies the power characteristic of the ESS to match the PV panel and thus achieves optimal power utilization. Impact on PV and power point tracking performance is analyzed. Simulation of the proposed system is performed in MATLAB/Simulink. The results are found to be satisfactory.
| Author of HS Reutlingen | Wattenberg, Martin; Pfost, Martin |
|---|---|
| DOI: | https://doi.org/10.1109/ISSCS.2017.8034940 |
| ISBN: | 978-1-5386-0674-2 |
| Erschienen in: | International Symposium on Signals, Circuits and Systems - ISSCS 2017, July 13-14, Iasi, Romania |
| Publisher: | IEEE |
| Place of publication: | Piscataway, NJ |
| Document Type: | Conference proceeding |
| Language: | English |
| Publication year: | 2017 |
| Page Number: | 4 |
| DDC classes: | 620 Ingenieurwissenschaften und Maschinenbau |
| Open access?: | Nein |
| Licence (German): |  In Copyright - Urheberrechtlich geschützt |
