TY - JOUR
T1 - Interleaved four-phase buck-based current source with center-tapped energy-recovery scheme for electrical discharge machining
AU - Lin, Ray Lee
AU - Hsu, Cheng Ching
AU - Changchien, Shih Kuen
N1 - Funding Information:
Manuscript received November 19, 2009; revised April 30, 2010; accepted May 22, 2010. Date of current version December 27, 2010. This work was supported by the National Science Council (NSC), Taiwan, under Award NSC 94-2213-E-006-129, Award 95-2221-E-006-477, Award 96-2221-E-006-318, and Award 96-2628-E-006-255-MY2, and also the Shared Facilities supported by the Program of Top 100 Universities Advancement, Ministry of Education, Taiwan. This paper was presented in IEEE Applied Power Electronics Conference and Exposition 2008. Recommended for publication by Associate Editor P. Jain.
PY - 2011
Y1 - 2011
N2 - This paper proposes a center-tapped energy-recovery scheme used in the interleaved four-phase buck-based current source in continuous-conduction mode for electrical discharge machining (EDM). A pulse-machining current with high-slew rate is required for the EDM. Using the interleaving technique, the output-current slew rate of the buck-based current source can be improved because of the paralleled inductors at the start of discharge. The proposed center-tapped energy-recovery scheme provides a major path for the inductor to release its stored energy to avoid high-voltage stress in the output terminal when the gap is in the high-impedance state. The energy stored in the inductor is recovered to the input capacitor, and can be reused for machining. The experimental results are provided as the verification of the high-output-current slew rate and the energy recovery when the gap is in high-impedance state.
AB - This paper proposes a center-tapped energy-recovery scheme used in the interleaved four-phase buck-based current source in continuous-conduction mode for electrical discharge machining (EDM). A pulse-machining current with high-slew rate is required for the EDM. Using the interleaving technique, the output-current slew rate of the buck-based current source can be improved because of the paralleled inductors at the start of discharge. The proposed center-tapped energy-recovery scheme provides a major path for the inductor to release its stored energy to avoid high-voltage stress in the output terminal when the gap is in the high-impedance state. The energy stored in the inductor is recovered to the input capacitor, and can be reused for machining. The experimental results are provided as the verification of the high-output-current slew rate and the energy recovery when the gap is in high-impedance state.
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U2 - 10.1109/TPEL.2010.2052070
DO - 10.1109/TPEL.2010.2052070
M3 - Article
AN - SCOPUS:78650970166
SN - 0885-8993
VL - 26
SP - 110
EP - 118
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 1
M1 - 5482123
ER -