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Simplified control technique for unity-power-factor boost pre-regulator

Simplified control technique for unity-power-factor boost pre-regulator

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Published

A simple implementation of the average-current-mode control technique for a single-phase boost power-factor pre-regulator is presented to give good line current correction. The controller avoids use of a multiplier, a sample-and-hold circuit, and a line voltage sensor. It provides an effective solution when a low-cost control circuit is required.

Inspec keywords: power factor correction; electric current control; pulse width modulation

Other keywords: nonlinear PWM controller; low-cost control circuit; single-phase pre-regulator; average-current-mode control technique; unity-power-factor boost pre-regulator; line current correction

Subjects: Control of electric power systems; Power convertors and power supplies to apparatus; Current control

References

    1. 1)
      • K.M. Smith , Z. Lai , K.M. Smedley . A new PWM controller with one-cycle response. IEEE Trans. Power Electron. , 1 , 142 - 150
    2. 2)
      • J. Rajagopalan , F.C. Lee , P. Nora . A general technique for derivation of average current mode control lawsfor single-phase power-factor-correction circuits withoutinput voltage sensing. IEEE Trans. Power Electron. , 4 , 663 - 672
    3. 3)
      • Rodd, P.C.: `UC3854 controlled power factor correction circuit design', U-134, Unitrode Application Note, .
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