TY - GEN
T1 - Current sourcing isolated grid connected inverter
AU - Zeltser, Ilya
AU - Ben-Yaakov, Sam
PY - 2010/8/31
Y1 - 2010/8/31
N2 - This study proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high frequency isolation transformer. Current sourcing at the output implies that, ideally, the injected current will be independent of the load voltage. The current injected to the line is controlled by varying the switching frequency and PWM at low currents. The system does not require the sensing of the output current or even the line voltage - except for synchronization. This is in contrast to the conventional voltage sourcing inverters where the small disturbance at the line voltage may lead to current run away and consequently a tight current feedback loop must be applied. The proposed topology and several proposed control approaches were analyzed and verified by simulations and by experiments. The simulation and experimental results confirm the theoretical analysis and show that the proposed inverter can be operated with no sensing of the line current or voltage except for synchronization.
AB - This study proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high frequency isolation transformer. Current sourcing at the output implies that, ideally, the injected current will be independent of the load voltage. The current injected to the line is controlled by varying the switching frequency and PWM at low currents. The system does not require the sensing of the output current or even the line voltage - except for synchronization. This is in contrast to the conventional voltage sourcing inverters where the small disturbance at the line voltage may lead to current run away and consequently a tight current feedback loop must be applied. The proposed topology and several proposed control approaches were analyzed and verified by simulations and by experiments. The simulation and experimental results confirm the theoretical analysis and show that the proposed inverter can be operated with no sensing of the line current or voltage except for synchronization.
UR - http://www.scopus.com/inward/record.url?scp=77956006740&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2010.5537202
DO - 10.1109/ISCAS.2010.5537202
M3 - Conference contribution
AN - SCOPUS:77956006740
SN - 9781424453085
T3 - ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems
SP - 2203
EP - 2206
BT - ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
T2 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
Y2 - 30 May 2010 through 2 June 2010
ER -