TY - JOUR
T1 - A Mini-Marx Generator Powered by a Cockcroft-Walton Voltage Multiplier
AU - Aranganadin, Kaviya
AU - Zhang, Zhaofeng
AU - Lin, Yen Cheng
AU - Chang, Po Yu
AU - Hsu, Hua Yi
AU - Lin, Ming Chieh
N1 - Publisher Copyright:
© 1973-2012 IEEE.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - A Marx generator generates a high-voltage (HV) pulse by charging two or more capacitors in parallel and then suddenly connecting them in series. In principles, a comparatively lower voltage dc power supply has to be used for the charging to achieve the desired HV. However, a moderate dc HV power supply is still quite expensive and bulky but not in full-time usage. In this work, a mini-Marx generator powered by a Cockcroft-Walton (CW) voltage multiplier has been proposed to form a more efficient, compact, but affordable configuration of pulsed HV power sources. For generating an HV in a range of 20-150 kV with the mini-Marx generator consisting of eight stages, a CW multiplier operating up to 3-20 kV is required. Numerical simulations using PSpice have been performed for validating the concept. For demonstration, a prototype of the 22-stage CW-powered four-stage mini-Marx has been built and tested with an ac voltage of 110 V at 60 Hz. In the experiment, the CW generator can reach 3.6 kV to power the mini-Marx, delivering an HV of 12.7 kV, consistent with the PSpice modeling. With an ac household voltage of 220 V at 60 Hz, a dc voltage of 5.2 kV can be obtained from the CW to charge an eight-stage mini-Marx generator, achieving an output voltage of 33 kV to drive a field emission-based X-ray source. The proposed CW powered mini-Marx generator is general and can be used as a compact pulsed voltage supply for some portable devices.
AB - A Marx generator generates a high-voltage (HV) pulse by charging two or more capacitors in parallel and then suddenly connecting them in series. In principles, a comparatively lower voltage dc power supply has to be used for the charging to achieve the desired HV. However, a moderate dc HV power supply is still quite expensive and bulky but not in full-time usage. In this work, a mini-Marx generator powered by a Cockcroft-Walton (CW) voltage multiplier has been proposed to form a more efficient, compact, but affordable configuration of pulsed HV power sources. For generating an HV in a range of 20-150 kV with the mini-Marx generator consisting of eight stages, a CW multiplier operating up to 3-20 kV is required. Numerical simulations using PSpice have been performed for validating the concept. For demonstration, a prototype of the 22-stage CW-powered four-stage mini-Marx has been built and tested with an ac voltage of 110 V at 60 Hz. In the experiment, the CW generator can reach 3.6 kV to power the mini-Marx, delivering an HV of 12.7 kV, consistent with the PSpice modeling. With an ac household voltage of 220 V at 60 Hz, a dc voltage of 5.2 kV can be obtained from the CW to charge an eight-stage mini-Marx generator, achieving an output voltage of 33 kV to drive a field emission-based X-ray source. The proposed CW powered mini-Marx generator is general and can be used as a compact pulsed voltage supply for some portable devices.
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U2 - 10.1109/TPS.2022.3179585
DO - 10.1109/TPS.2022.3179585
M3 - Article
AN - SCOPUS:85141032396
SN - 0093-3813
VL - 50
SP - 3393
EP - 3399
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 10
ER -