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http://dx.doi.org/10.5370/JEET.2014.9.5.1562

Control-to-output Transfer Function of the Open-loop Step-up Converter in CCM Operation  

Wang, Faqiang (State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University)
Ma, Xikui (State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University)
Publication Information
Journal of Electrical Engineering and Technology / v.9, no.5, 2014 , pp. 1562-1568 More about this Journal
Abstract
Based on the average method and the geometrical technique to calculate the average value, the average model of the open-loop step-up converter in CCM operation is established. The DC equilibrium point and corresponding small signal model is derived. The control-to-output transfer function is presented and analyzed. The theoretical analysis and PSIM simulations shows that the control-to-output transfer function includes not only the DC input voltage and the DC duty cycle, but also the two inductors, the two energy-transferring capacitors, the switching frequency and the load. Finally, the hardware circuit is designed, and the circuit experimental results are given to confirm the effectiveness of theoretical derivations and analysis.
Keywords
Step-up converter; Average model; Small signal model; Control-to-output transfer function;
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Times Cited By KSCI : 4  (Citation Analysis)
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