C
Cong Zheng
Researcher at Virginia Tech
Publications - 39
Citations - 2250
Cong Zheng is an academic researcher from Virginia Tech. The author has contributed to research in topics: Power factor & Capacitor. The author has an hindex of 18, co-authored 38 publications receiving 1894 citations. Previous affiliations of Cong Zheng include Illinois Institute of Technology & University of Virginia.
Papers
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Journal ArticleDOI
High-Efficiency Hybrid Full-Bridge–Half-Bridge Converter With Shared ZVS Lagging Leg and Dual Outputs in Series
Chuang Liu,Bin Gu,Jih-Sheng Lai,Mingyan Wang,Yanchao Ji,Guowei Cai,Zheng Zhao,Chien-Liang Chen,Cong Zheng,Pengwei Sun +9 more
TL;DR: In this paper, a hybrid phase-shift full-bridge and half-bridge converter with shared zero-voltage switching (ZVS) lagging leg is proposed to ensure the switches in the Lagging leg operating at fully ZVS condition, and the dual outputs of the proposed hybrid FB-HB converter are connected in series and the whole dc-output voltage can be regulated by the PWM phase shift control within the desired voltage range.
Journal ArticleDOI
High-Efficiency DC–DC Converter With Twin Bus for Dimmable LED Lighting
TL;DR: In this paper, an improved twin-bus converter using n + 1 active switches is proposed for the n-string LEDs to be dimmable from true zero to the rated current level.
Journal ArticleDOI
Design Considerations to Reduce Gap Variation and Misalignment Effects for the Inductive Power Transfer System
TL;DR: In this article, the effect of coupling coefficient deviation to compensation network efficiency is analyzed, and design considerations to reduce gap and misalignment effects for the inductive power transfer (IPT) system are proposed.
Journal ArticleDOI
A High-Efficiency Quasi-Single-Stage Bridgeless Electrolytic Capacitor-Free High-Power AC-DC Driver for Supplying Multiple LED Strings in Parallel
TL;DR: In this paper, a single-stage bridgeless, soft-switched integrated AC-DC converter is proposed, which can be derived by integrating the totem-pole bridgless boost power factor correction (PFC) circuit and half-bridge LLC resonant converter.
Proceedings ArticleDOI
Design considerations to reduce gap variation and misalignment effects for inductive power transfer system
TL;DR: The proposed asymmetrical LCT prototype improves the coupling coefficient reduction when the gap varies from 6 to 20 mm and from 89% to 31% when the misalignment ranges from 0 to 50 mm, and the efficiency deviation for the asymmetric LCT is maintained within 3.5% over the entire tested gap variation and misal alignment ranges.