TY - JOUR
T1 - A safety enhanced, high step-up DC-DC converter for AC photovoltaic module application
AU - Chen, Shih Ming
AU - Liang, Tsorng Juu
AU - Yang, Lung Sheng
AU - Chen, Jiann Fuh
N1 - Funding Information:
Manuscript received January 27, 2011; revised April 18, 2011 and July 5, 2011; accepted September 12, 2011. Date of current version February 20, 2012. This work was supported by the National Science Council of Taiwan, under project No. NSC 99-2218-E-006-004. Recommended for publication by Associate Editor T. Shimizu.
PY - 2012
Y1 - 2012
N2 - Within the photovoltaic (PV) power-generation market, the ac PV module has shown obvious growth. However, a high voltage gain converter is essential for the modules grid connection through a dc-ac inverter. This paper proposes a converter that employs a floating active switch to isolate energy from the PV panel when the ac module is off; this particular design protects installers and users from electrical hazards. Without extreme duty ratios and the numerous turns-ratios of a coupled inductor, this converter achieves a high step-up voltage-conversion ratio; the leakage inductor energy of the coupled inductor is efficiently recycled to the load. These features explain the modules high-efficiency performance. The detailed operating principles and steady-state analyses of continuous, discontinuous, and boundary conduction modes are described. A 15V input voltage, 200V output voltage, and 100W output power prototype circuit of the proposed converter has been implemented; its maximum efficiency is up to 95.3 and full-load efficiency is 92.3.
AB - Within the photovoltaic (PV) power-generation market, the ac PV module has shown obvious growth. However, a high voltage gain converter is essential for the modules grid connection through a dc-ac inverter. This paper proposes a converter that employs a floating active switch to isolate energy from the PV panel when the ac module is off; this particular design protects installers and users from electrical hazards. Without extreme duty ratios and the numerous turns-ratios of a coupled inductor, this converter achieves a high step-up voltage-conversion ratio; the leakage inductor energy of the coupled inductor is efficiently recycled to the load. These features explain the modules high-efficiency performance. The detailed operating principles and steady-state analyses of continuous, discontinuous, and boundary conduction modes are described. A 15V input voltage, 200V output voltage, and 100W output power prototype circuit of the proposed converter has been implemented; its maximum efficiency is up to 95.3 and full-load efficiency is 92.3.
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U2 - 10.1109/TPEL.2011.2170097
DO - 10.1109/TPEL.2011.2170097
M3 - Article
AN - SCOPUS:84863164136
SN - 0885-8993
VL - 27
SP - 1809
EP - 1817
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 4
M1 - 6031927
ER -