TY - JOUR
T1 - Two electrical models of the lead-acid battery used in a dynamic voltage restorer
AU - Zhan, C. J.
AU - Wu, X. G.
AU - Kromlidis, S.
AU - Ramachandaramurthy, V. K.
AU - Barnes, M.
AU - Jenkins, N.
AU - Ruddell, A. J.
PY - 2003/3
Y1 - 2003/3
N2 - Two electrical models of a lead-acid battery, a short-term discharge model and a long-term integrated model, were used to investigate the system performance of a battery-supported dynamic voltage restorer (DVR). The short-term model provides a simple but effective description when the DVR compensates voltage sags over a short period. The integrated model can predict accurately the terminal voltage, state of charge, battery capacity and gassing current. It gives a good description of the battery response during both discharge and charge. Parameters of both models can be determined easily from measured battery output voltages obtained from load-step tests. Both models were successfully implemented in EMTDC/PSCAD and interfaced with the digital model of a 10kVA DVR physical prototype. They gave a very close agreement between extensive experimental data and simulation results. Application issues such as current harmonics and microcycles during charge/discharge are discussed with respect to their impact on loss of capacity and reduced lifetime of the lead-acid battery.
AB - Two electrical models of a lead-acid battery, a short-term discharge model and a long-term integrated model, were used to investigate the system performance of a battery-supported dynamic voltage restorer (DVR). The short-term model provides a simple but effective description when the DVR compensates voltage sags over a short period. The integrated model can predict accurately the terminal voltage, state of charge, battery capacity and gassing current. It gives a good description of the battery response during both discharge and charge. Parameters of both models can be determined easily from measured battery output voltages obtained from load-step tests. Both models were successfully implemented in EMTDC/PSCAD and interfaced with the digital model of a 10kVA DVR physical prototype. They gave a very close agreement between extensive experimental data and simulation results. Application issues such as current harmonics and microcycles during charge/discharge are discussed with respect to their impact on loss of capacity and reduced lifetime of the lead-acid battery.
U2 - 10.1049/ip-gtd:20030124
DO - 10.1049/ip-gtd:20030124
M3 - Article
SN - 1350-2425
VL - 150
SP - 175
EP - 182
JO - IEE Proceedings: Communications
JF - IEE Proceedings: Communications
IS - 2
ER -