TY - JOUR
T1 - A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current
AU - Kurdkandi, Naser Vosoughi
AU - Marangalu, Milad Ghavipanjeh
AU - Mohammadsalehian, Shamim
AU - Tarzamni, Hadi
AU - Siwakoti, Yam
AU - Islam, Md Rabiul
AU - Muttaqi, Kashem M.
N1 - Publisher Copyright:
Author
PY - 2022
Y1 - 2022
N2 - This paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the photovoltaic (PV) system, which is the major problem in grid-tied PV applications. Additional significant features include-reduced filter size, lower total harmonic distortion (THD) of the injected current to the grid, and voltage boosting ability. Moreover, the proposed topology provides full reactive power support to the grid. A control strategy is designed and implemented to provide a voltage boost ability without using any additional dc-dc boost converter. Finally, the performance of the proposed inverter is validated by the 770 W laboratory prototype.
AB - This paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the photovoltaic (PV) system, which is the major problem in grid-tied PV applications. Additional significant features include-reduced filter size, lower total harmonic distortion (THD) of the injected current to the grid, and voltage boosting ability. Moreover, the proposed topology provides full reactive power support to the grid. A control strategy is designed and implemented to provide a voltage boost ability without using any additional dc-dc boost converter. Finally, the performance of the proposed inverter is validated by the 770 W laboratory prototype.
KW - Capacitors
KW - Inverters
KW - leakage current limitation
KW - Leakage currents
KW - photovoltaic application
KW - Switches
KW - Topology
KW - Transformer-less inverter
KW - Transformers
KW - Voltage
KW - voltage boosting ability
UR - http://www.scopus.com/inward/record.url?scp=85132780087&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2022.3182240
DO - 10.1109/ACCESS.2022.3182240
M3 - Article
AN - SCOPUS:85132780087
SN - 2169-3536
SP - 63736
EP - 63753
JO - IEEE Access
JF - IEEE Access
ER -
