TY - GEN
T1 - Buck-type current-fed push-pull converter with ZCS for high voltage applications
AU - Liang, Tsorng Juu
AU - Chen, Ren Yi
AU - Chen, Jiann Fuh
AU - Tzeng, Wei Jin
PY - 2007/12/1
Y1 - 2007/12/1
N2 - A buck-type current-fed push-pull converter with zero current switching (ZCS) is proposed in this paper. The proposed converter is comprised of two buck switches, two flywheel diodes, a current-fed push-pull converter, and a high-voltage transformer. The proposed converter using buck switches to reduce the start-up inrush current and to operate with constant switching frequency compare with the L-type half-bridge isolated boost converter. The buck converters regulate the output voltage and operate with PWM modulation, while the push-pull switches operate with constant switching frequency and a fixed duty-ratio. The proposed converter also utilizes the leakage inductance and parasitic capacitance of a high voltage transformer to achieve ZCS operation of push-pull switches. Finally, a laboratory prototype converter with a 200 V input and a 4 kV/ 1 kW output is implemented to verify the performance of the proposed converter. The experimental results show that the proposed converter can achieve a high output voltage and an efficiency of 90% at full load.
AB - A buck-type current-fed push-pull converter with zero current switching (ZCS) is proposed in this paper. The proposed converter is comprised of two buck switches, two flywheel diodes, a current-fed push-pull converter, and a high-voltage transformer. The proposed converter using buck switches to reduce the start-up inrush current and to operate with constant switching frequency compare with the L-type half-bridge isolated boost converter. The buck converters regulate the output voltage and operate with PWM modulation, while the push-pull switches operate with constant switching frequency and a fixed duty-ratio. The proposed converter also utilizes the leakage inductance and parasitic capacitance of a high voltage transformer to achieve ZCS operation of push-pull switches. Finally, a laboratory prototype converter with a 200 V input and a 4 kV/ 1 kW output is implemented to verify the performance of the proposed converter. The experimental results show that the proposed converter can achieve a high output voltage and an efficiency of 90% at full load.
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U2 - 10.1109/TENCON.2007.4429137
DO - 10.1109/TENCON.2007.4429137
M3 - Conference contribution
AN - SCOPUS:48649094550
SN - 1424412722
SN - 9781424412723
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
BT - TENCON 2007 - 2007 IEEE Region 10 Conference
T2 - IEEE Region 10 Conference, TENCON 2007
Y2 - 30 October 2007 through 2 November 2007
ER -