TY - JOUR
T1 - A novel high step-up DC-DC converter for a microgrid system
AU - Hsieh, Yi Ping
AU - Chen, Jiann Fuh
AU - Liang, Tsorng Juu
AU - Yang, Lung Sheng
N1 - Funding Information:
Manuscript received June 27, 2010; revised September 1, 2010 and October 26, 2010; accepted November 26, 2010. Date of current version June 10, 2011. Recommended for publication by Associate Editor F. L. Luo. This work was supported in part by the Research Center of Ocean Environment and Technology, Tainan City, Taiwan, in part by Ocean Energy Research Center, and in part by the National Science Council, Taipei, Taiwan, under Award NSC 97-2221-E-006-278-MY3.
PY - 2011
Y1 - 2011
N2 - A novel high step-up dcdc converter for a distributed generation system is proposed in this paper. The concept is composed of two capacitors, two diodes, and one coupled inductor. Two capacitors are charged in parallel, and are discharged in series by the coupled inductor. Thus, high step-up voltage gain can be achieved with an appropriate duty ratio. The voltage stresses on the main switch and output diode are reduced by a passive clamp circuit. Therefore, low resistance RDS(ON) for the main switch can be adopted to reduce conduction loss. In addition, the reverse-recovery problem of the diode is alleviated, and thus, the efficiency can be further improved. The operating principle and steady-state analyses of the voltage gain are also discussed in detail. Finally, a 24-V input voltage, 400-V output voltage, and 400-W output power prototype circuit of the proposed converter are implemented in the laboratory to verify the performance.
AB - A novel high step-up dcdc converter for a distributed generation system is proposed in this paper. The concept is composed of two capacitors, two diodes, and one coupled inductor. Two capacitors are charged in parallel, and are discharged in series by the coupled inductor. Thus, high step-up voltage gain can be achieved with an appropriate duty ratio. The voltage stresses on the main switch and output diode are reduced by a passive clamp circuit. Therefore, low resistance RDS(ON) for the main switch can be adopted to reduce conduction loss. In addition, the reverse-recovery problem of the diode is alleviated, and thus, the efficiency can be further improved. The operating principle and steady-state analyses of the voltage gain are also discussed in detail. Finally, a 24-V input voltage, 400-V output voltage, and 400-W output power prototype circuit of the proposed converter are implemented in the laboratory to verify the performance.
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U2 - 10.1109/TPEL.2010.2096826
DO - 10.1109/TPEL.2010.2096826
M3 - Article
AN - SCOPUS:79958818091
VL - 26
SP - 1127
EP - 1136
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 4
M1 - 5658160
ER -