Publication Type |
pre-print |
School or College |
College of Engineering |
Department |
Electrical & Computer Engineering |
Creator |
Khan, Faisal Habib |
Other Author |
Alam, Mohammed Khorshed |
Title |
Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio |
Date |
2012-01-01 |
Description |
The multilevel modular capacitor clamped dc-to-dc converter (MMCCC) topology is completely modular and belongs to two-phase switched capacitor converter group. The conversion ratio of an ideal MMCCC converter in step-up mode is an integer and depends on the number of modules used. For a k-module MMCCC, the maximum up-conversion ratio is (k+1), and it has already been shown in literature that different integer conversion ratios can be achieved by changing the active number of modules of an MMCCC. In this paper, different methods are proposed for MMCCC in order to achieve fractional conversion ratios (CR) in step-up mode without changing the complementary two-phase switching orientation. Fractional CRs can be obtained in several switched-capacitor circuits at the cost of significantly lower efficiency. However, MMCCC with the aid of a new pulse dropping technique can produce fractional CR while maintaining high efficiency. The variation in efficiency and equivalent resistance as a function of frequency has been analyzed in this paper. Simulation and experimental results using a reconfigurable 5-module MMCCC prototype have been used to validate the new control scheme. |
Type |
Text |
Publisher |
Institute of Electrical and Electronics Engineers (IEEE) |
First Page |
3206 |
Last Page |
3212 |
Dissertation Institution |
University of Utah |
Language |
eng |
Bibliographic Citation |
Alam, M. K., & Khan, F. H. (2012). Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio. 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012, no. 6342346, 3206-12. |
Rights Management |
(c)2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
Format Medium |
application/pdf |
Format Extent |
2,191,461 bytes |
Identifier |
uspace,18134 |
ARK |
ark:/87278/s6417fvb |
Setname |
ir_uspace |
ID |
708304 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6417fvb |