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Integrated high-quality rectifier-regulators
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DOI：10.1109/41.778229.png)
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Abstract
En 中文
A new family of ac-dc converters is derived which integrate the functions of low-harmonic rectification, low-frequency energy storage, and wide-bandwidth output voltage control into a single converter containing one, two, or four active switches, These converters utilize a discontinuous conduction mode input inductor, an internal energy storage capacitor, and transformer secondary circuits which resemble the bridge, forward, flyback, or Cuk dc-dc converters. A large-signal equivalent circuit model for this family is presented, which uses the loss-free resistor concept. Design strategies and experimental results are given. High-performance regulation with satisfactory line-current harmonics is demonstrated with conventional duty-ratio control. Further improvements in line current are possible by simultaneous duty-ratio and switching-frequency control.
Keywords:
AC-DC power conversion
boost integrated with flyback rectifier/energy storage/dc-dc converter
buck rectifier/energy storage/dc-dc converter
low-harmonic rectifiers
power-factor correction
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