NDLI: A high-efficiency modular switched-capacitor converter with continuously variable conversion ratio

Content Provider	IEEE Xplore Digital Library
Author	Alam, M.K. Khan, F.H.
Copyright Year	2012
Description	Author affiliation: Power Engineering and Automation Research Lab (PEARL), Dept. of Electrical and Computer Engineering, Univ. of Utah, Salt Lake City, USA (Alam, M.K.; Khan, F.H.)
Abstract	The multilevel modular capacitor clamped converter (MMCCC) topology overcomes the difficulties of the multilevel switched capacitor (SC) based dc-to-dc converters in high conversion ratio applications. MMCCC is completely modular and has many other advantageous features. Like most other SC converters, MMCCC suffers from limited voltage regulation. The conversion ratio of an ideal MMCCC converter in step-up mode is an integer, and this integer conversion ratio depends on the number of active modules. The maximum conversion ratio in step-up configuration for a k-module MMCCC is (k+1). It has already been shown in literature that different integer CRs can be achieved by changing the number of active modules of an MMCCC. Achieving voltage regulation by lowering the operating frequency is another well known technique for switched capacitor converters. However, the output voltage ripple increases in inverse proportion of the frequency. In this paper, a new switching scheme is proposed for MMCCC to achieve continuously variable CRs. The proposed switching scheme requires introducing a small inductor in each module of the MMCCC without altering the modular structure of the converter. This additional inductor can be realized using the stray inductance distributed in the circuit or small external inductors. It has been shown that continuous CR variation with lower output ripple can be achieved without lowering the operating frequency of the converter. This proposed method introduces another degree of freedom in order to achieve variable CR using MMCCC. Simulation results and experimental results obtained from an MMCCC prototype have been used to validate the new control scheme.
Starting Page	1
Ending Page	5
File Size	2307190
Page Count	5
File Format	PDF
ISBN	9781424493722
ISSN	10935142
e-ISBN	9781424493739
e-ISBN	9781424493715
DOI	10.1109/COMPEL.2012.6251791
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inductors Switches Capacitors Indexes Stress Amplitude modulation Power electronics
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio

Simple switched-capacitor-boost converter with large DC gain and low voltage stress on switches

High step-up, high power density boost converter integrated with switched capacitor-diode cell

Achieving Continuously Variable Conversion Ratio from a Multilevel Modular Switched-Capacitor Converter

PWM switched capacitor voltage divider with high step-down ratio

Step-down switched-capacitor quasi-resonant PWM converter with continuous conversion ratio

Performance analysis of high conversion ratio converter with switched capacitor and voltage gain extension cell

A high step-up DC-DC converter with intermediate capacitor and coupled inductors

Two-phase high efficiency interleaved buck converter with improved step-down conversion ratio and low voltage stress

A high-efficiency modular switched-capacitor converter with continuously variable conversion ratio

Similar Documents

Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio

Simple switched-capacitor-boost converter with large DC gain and low voltage stress on switches

High step-up, high power density boost converter integrated with switched capacitor-diode cell

Achieving Continuously Variable Conversion Ratio from a Multilevel Modular Switched-Capacitor Converter

PWM switched capacitor voltage divider with high step-down ratio

Step-down switched-capacitor quasi-resonant PWM converter with continuous conversion ratio

Performance analysis of high conversion ratio converter with switched capacitor and voltage gain extension cell

A high step-up DC-DC converter with intermediate capacitor and coupled inductors

Two-phase high efficiency interleaved buck converter with improved step-down conversion ratio and low voltage stress

A high-efficiency modular switched-capacitor converter with continuously variable conversion ratio