TY - JOUR
T1 - Single-Phase Virtual-Ground Transformerless Buck-Boost Inverters
AU - Akbar, Fazal
AU - Elkhateb, Ahmad
AU - Ahmed, Hafiz Furqan
AU - Khan, Ashraf Ali
AU - Cha, Honnyong
AU - Park, Jung Wook
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2023/9/1
Y1 - 2023/9/1
N2 - This article presents a new family of transformerless buck-boost voltage-source inverter topologies for photovoltaic systems. Due to variations in irradiance, temperature, and shading effects, the terminal voltages of photovoltaic panels can vary, making the use of buck-boost inverters crucial. The proposed topologies have a virtual-ground feature that effectively mitigates the common-mode voltage issue and results in low leakage current. The simple inductor-based proposed inverter can achieve a wide gain range. Also, other counterparts obtained from extending the underlying concept of the simple inductor-based proposed inverter, such as the switched inductor, three-winding coupled inductor, and series capacitor converters, are capable of achieving high boost voltage gain with lower duty ratios. Comprehensive circuit analyses are provided, along with simulation results, to confirm the operation of each proposed topology. Additionally, experiment findings for a 500-W prototype built on the simple inductor topology are presented to support the theoretical analysis and effectiveness of the proposed designs.
AB - This article presents a new family of transformerless buck-boost voltage-source inverter topologies for photovoltaic systems. Due to variations in irradiance, temperature, and shading effects, the terminal voltages of photovoltaic panels can vary, making the use of buck-boost inverters crucial. The proposed topologies have a virtual-ground feature that effectively mitigates the common-mode voltage issue and results in low leakage current. The simple inductor-based proposed inverter can achieve a wide gain range. Also, other counterparts obtained from extending the underlying concept of the simple inductor-based proposed inverter, such as the switched inductor, three-winding coupled inductor, and series capacitor converters, are capable of achieving high boost voltage gain with lower duty ratios. Comprehensive circuit analyses are provided, along with simulation results, to confirm the operation of each proposed topology. Additionally, experiment findings for a 500-W prototype built on the simple inductor topology are presented to support the theoretical analysis and effectiveness of the proposed designs.
KW - Photovoltaic systems
KW - power semiconductor devices
KW - pulse width modulation
KW - voltage source inverters
UR - http://www.scopus.com/inward/record.url?scp=85162717239&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3283927
DO - 10.1109/TPEL.2023.3283927
M3 - Article
AN - SCOPUS:85162717239
SN - 0885-8993
VL - 38
SP - 11585
EP - 11600
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 9
ER -