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http://dx.doi.org/10.6113/JPE.2016.16.5.1689

Continuous Conduction Mode Soft-Switching Boost Converter and its Application in Power Factor Correction  

Cheng, Miao-miao (College of Electrical and Information Engineering, Hunan University)
Liu, Zhiguo (College of Electrical and Information Engineering, Hunan University)
Bao, Yueyue (College of Electrical and Information Engineering, Hunan University)
Zhang, Zhongjie (College of Electrical and Information Engineering, Hunan University)
Publication Information
Journal of Power Electronics / v.16, no.5, 2016 , pp. 1689-1697 More about this Journal
Abstract
Continuous conduction mode (CCM) boost converters are commonly used in home appliances and various industries because of their simple topology and low input current ripples. However, these converters suffer from several disadvantages, such as hard switching of the active switch and reverse recovery problems of the output diode. These disadvantages increase voltage stresses across the switch and output diode and thus contribute to switching losses and electromagnetic interference. A new topology is presented in this work to improve the switching characteristics of CCM boost converters. Zero-current turn-on and zero-voltage turn-off are achieved for the active switches. The reverse-recovery current is reduced by soft turning-off the output diode. In addition, an input current sensorless control is applied to the proposed topology by pre-calculating the duty cycles of the active switches. Power factor correction is thus achieved with less effort than that required in the traditional method. Simulation and experimental results verify the soft-switching characteristics of the proposed topology and the effectiveness of the proposed input current sensorless control.
Keywords
Continuous conduction mode boost converter; Input current sensorless control; Power factor correction; Soft switching;
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