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http://dx.doi.org/10.6113/JPE.2016.16.5.1763

Determination Method for Topology Configuration of Hybrid Cascaded H-Bridge Rectifiers  

Zhuang, Yuan (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Wang, Cong (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Wang, Chang (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Cheng, Hong (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Gong, Yingcai (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Wang, Hao (Sch. of Mechanical Electronic and Information Eng., China University of Mining and Technology)
Publication Information
Journal of Power Electronics / v.16, no.5, 2016 , pp. 1763-1772 More about this Journal
Abstract
To reduce system complexity and implementation costs, fully-controlled H-bridge (FHB) modules and diode H-bridge PFC (DHB) modules are cascaded to form a hybrid cascaded H-bridge rectifier (HCHR). In this paper, the advantages of such a HCHR over other cascaded rectifiers are analyzed depending on the numbers of FHB modules and DHB modules. Therefore, to assign proper numbers to these two kinds of modules for the HCHR, a configuration determination method is investigated under balanced and imbalanced loads. Three principles are also presented to guide the configuration determination for the HCHR. In addition, the constraints for selecting the step-up ratio and filter inductance are derived based on a phasor diagram analysis. The proposed configuration determination method is validated by simulations under three different conditions in the PSIM environment. Finally, experiments are carried out on a scaled-down prototype where the configuration can be easily adjusted. The feasibility of the proposed theory is then verified by experimental results.
Keywords
Hybrid cascaded H-bridge rectifier; Topology configuration; Unity power factor; Voltage balancing;
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