Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A New Zero-Voltage-Switching Bridgeless PFC, Using an Active Clamp

  • Ramezani, Mehdi (Dept. of Electrical and Electronics Eng., Tennessee Technological University) ;
  • Ghasedian, Ehsan (Dept. of Electrical and Electronics Eng., Isfahan University of Technology) ;
  • Madani, Seyed M. (Dept. of Engineering., University of Isfahan)
  • Received : 2011.03.24
  • Published : 2012.09.20
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Abstract

This paper presents a new ZVS single phase bridgeless (Power Factor Correction) PFC, using an active clamp to achieve zero-voltage-switching for all main switches and diodes. Since the presented PFC uses a bridgeless rectifier, most of the time, only two semiconductor components are in the main current path, instead of three in conventional single-switch configurations. This property significantly reduces the conduction losses,. Moreover, zero voltage switching removes switching loss of all main switches and diodes. Also, auxiliary switch turns on zero current condition. The presented converter needs just a simple non-isolated gate drive circuitry to drive all switches. The eight stages of each switching period and the design considerations and a control strategy are explained. Finally, the converter operation is verified by simulation and experimental results.

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References

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