Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Three-Phase AC-to-DC Resonant Converter Operating in High Power Factor Mode in High-Voltage Applications

  • Chaudhari, Madhuri A. (Electrical Engineering Department, Yeshwantrao Chavan College of Engineering) ;
  • Suryawanshi, Hiralal M. (Electrical Engineering Department, Visvesvaraya National Institute of Technology) ;
  • Kulwal, Abhishek (Electrical Engineering Department, Visvesvaraya National Institute of Technology) ;
  • Mishra, Mahesh K. (Electrical Engineering Department, Indian Institute of Technology)
  • Published : 2008.02.20
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Abstract

In this paper a three-phase ac-to-dc resonant converter with high input power factor and isolated output is proposed. To improve the input power factor of the converter, high frequency current is injected into the input of the three-phase diode bridge rectifier. It is injected through an impedance network consisting of a series of L-C branches from the output of the high frequency three-phase inverter. A narrow switching frequency variation is required to regulate the output voltage. A design example with different design curves is illustrated along with the component ratings. Experimental verification of the converter is performed on a prototype of 3 kW, 1000 V output, operating above 300 kHz. Experimental results confirm the concept of the proposed converter. Narrow switching frequency variation is required to regulate the output voltage.

Keywords

References

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