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CHEN Yanming, WU Huifang, CAO Biao, WANG Zhiqiang. A zero-voltage and zero-current welding inverter with current doubler rectifier[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (6): 21-24.
Citation: CHEN Yanming, WU Huifang, CAO Biao, WANG Zhiqiang. A zero-voltage and zero-current welding inverter with current doubler rectifier[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (6): 21-24.
shu

A zero-voltage and zero-current welding inverter with current doubler rectifier

  • 1.

    College of Electrical Engineering, Guangxi University, Nanning 530004, China

  • 2.

    Electric Power College, South China University of Technology, Guangzhou 510641, China

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  • Received Date: July 25, 2006
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    • Abstract
  • A full-bridge with zero-voltage and zero-current switching (ZVZCS) PWM DC-DC welding inverter by employing phase-shift and current-doubler-rectifier is presented.The zero-voltage turn-on was achieved for the leading-leg of the converter, and zero-current turn-off was achieved for the lagging-leg, and the rectifier diodes in the secondary side were turned off naturally.All the power semiconductors in the converter were operated with softswitching condition.Hence the switching stresses, losses and interferes were reduced, and electromagnetic compatibility is improved. It is especially suitable for the high power output applications.The switching frequency can be increased, and the dynamic response can be improved.The soft-switching operating range and the design considerations were discussed.Finally, a 2 kWwelding inverter was designed, and the experimental results show its the good performances.
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