Abstract
This paper presents a method to solve the dynamic model of a grid-connected photovoltaic (PV) inverter with a battery energy storage. A three-phase grid-connected solar-battery system is studied using small-signal state-space modelling in the synchronously rotating dq-reference frame. The combined effect of a photovoltaic generator (PVG) and a bi-directional dc-dc battery charger (BC) on the inverter dynamic behaviour is analysed. It is shown that the characteristic right-half-plane pole in the PV inverter’s dc-link voltage control dynamics shifts to a lower frequency when the BC is connected, which improves the stability of the system and allows a lower bandwidth for the dc-link voltage control.
| Original language | English |
|---|---|
| Title of host publication | The 7th International Conference on Renewable Power Generation |
| Place of Publication | Copenhagen, Denmark |
| Number of pages | 6 |
| Publication status | Published - 2018 |
| Externally published | Yes |
| Publication type | A4 Article in conference proceedings |
Keywords
- Photovoltaic generator
- battery charger
- inverter
- control
- modeling
Publication forum classification
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