Mitigating voltage fluctuations on battery energy storage systems
Sallinen, Roosa; Messo, Tuomas; Roinila, Tomi (2019-06-01)
Lataukset:
Sallinen, Roosa
Messo, Tuomas
Roinila, Tomi
IEEE
01.06.2019
Proceedings of the 20th IEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202001271563
https://urn.fi/URN:NBN:fi:tuni-202001271563
Kuvaus
Peer reviewed
Tiivistelmä
Battery Energy Storage Systems (BESSs) play an important role in grid-connected renewable energy systems as they provide great flexibility in the energy production. For photovoltaic (PV) energy applications, the BESS may be connected to the dc-link of the converter system to inject the deficit or to absorb the surplus of generated power. One of the main issues in such systems is the voltage variation at the dc-link, especially under grid imbalance, distorting the current fed to the grid. This paper studies a method to control the BESS to emulate a capacitance, thus mitigating the dc-link voltage fluctuation, for example, under heavy imbalance. The derived model initiates impedance-based analysis at the output of the battery charger.
Kokoelmat
- TUNICRIS-julkaisut [16944]