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Combined source-effect of photovoltaic generator and bi-directional dc–dc battery charger on inverter control dynamics

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Original languageEnglish
Pages (from-to)5197-5201
Number of pages5
JournalThe Journal of Engineering
Issue number18
Publication statusPublished - 19 Aug 2019
Publication typeA1 Journal article-refereed
EventInternational Conference on Renewable Power Generation -
Duration: 1 Jan 1900 → …


This study presents a method to solve the dynamic model of a grid-connected photovoltaic (PV) inverter with 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 PV generator 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.

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