A Simple Average Current Control With On-Time Doubler for Multiphase CCM PFC Converter

This paper proposes a new modulated carrier control method for an interleaved continuous conduction mode (CCM) power factor correction (PFC) boost converter. The proposed method allows precise sinusoidal line current shaping for a PFC boost converter operating in CCM. This is accomplished by simply...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2015-03, Vol.30 (3), p.1683-1693
Main Authors: Kim, Hye-Jin, Seo, Gab-Su, Cho, Bo-Hyung, Choi, Hangseok
Format: Article
Language:English
Subjects:
Comparative analysis
Conductivity
Control systems
Converters
Current carriers
Detection
Electric power
Electrical equipment
Harmonic analysis
Inductors
Line current
Line voltage
Multiphase
Power factor
Resistance
Sensors
Switches
Voltage control
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Summary:This paper proposes a new modulated carrier control method for an interleaved continuous conduction mode (CCM) power factor correction (PFC) boost converter. The proposed method allows precise sinusoidal line current shaping for a PFC boost converter operating in CCM. This is accomplished by simply comparing modulated carrier signal with switch current, such that inner current loop compensation design and rectified line voltage sensing are not required. The proposed control method greatly simplifies current sensing and control circuitry of multiphase converters since average current control is available by just sensing the switch current for each module. This also enables simple current balancing between parallel converters by employing modulated carrier signals with same amplitude. The principle of the control method is presented. The performance of the proposed control method is experimentally verified on a 600-W PFC converter. The measured power factor remains above 94.9% down to 20% of a full load for 110-V rms and 220-V rms line voltages. The line current harmonics also meet the IEC61000-3-2 Class D standard.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2014.2318033