NDLI: Analysis of a seven-level asymmetrical hybrid multilevel converter for traction systems

Content Provider	IET Digital Library
Author	Ali, Muhammad Mansoor, Muhammad Tang, Houjun Rana, Ahmad
Abstract	A medium-voltage high-power electric traction system, due to its non-linear nature results in serious power quality issues in power system such as low-power factor and high-harmonic distortion. To mitigate the aforementioned problems, this study presents a seven-level asymmetrical hybrid multilevel converter that can be implemented using a single dc source and two capacitors. The proposed converter is a series connection of a five-level cascaded module (CM) converter with an H-bridge cell to meet the demand of medium-voltage high-power traction applications with improved power factor at minimum harmonic distortion. A modulation scheme presented will operate an H-bridge cell and a CM with a fundamental frequency and high-frequency switching, respectively. The unbalancing of dc-link capacitors voltages due to active power transfer requires corrective control action including current control, voltage control and voltage balancing that has been proposed to keep the dc-link capacitor voltage balanced. Working principle of the proposed topology and its mathematical analysis is presented in this work. The effectiveness of the controlled pulse-width modulation strategy and stability of the proposed control method have been validated through simulation and experimental results.
Starting Page	1878
Ending Page	1888
Page Count	11
ISSN	17554535
Volume Number	10
e-ISSN	17554543
Issue Number	Issue 14, Nov (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/10/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2016.1012
Journal	IET Power Electronics
Publisher Date	2017-07-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Transfer Capacitor Control of Electric Power System Controlled Pulse-width Modulation Strategy Corrective Control Action Current Control Dc-link Capacitor Voltage Electric Current Control Five-level Cascaded Module Converter Fundamental Frequency H-bridge Cell Harmonic Distortion High Frequency Switching High-harmonic Distortion Low-power Factor Mathematical Analysis Medium-voltage High-power Electric Traction System Minimum Harmonic Distortion Modulation Scheme Power Converter Power Electronics Power Factor Power Quality Issues Power Supplies to Apparatus Power Supply Power Supply Quality Seven-level Asymmetrical Hybrid Multilevel Converter Single Dc Source Supervisory Circuit Traction Transportation Voltage Balancing Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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

Novel multi-level inverters with flyback high frequency link

Single-phase ac–dc–ac topology for grid overvoltage and voltage harmonic mitigation

Dual asymmetrical dc voltage source based switched capacitor boost multilevel inverter topology

Multilevel converter with capacitor voltage actively balanced using reduced number of voltage sensors for high power applications

Cascaded multilevel inverter using series connection of novel capacitor-based units with minimum switch count

Hybrid single-carrier-based pulse width modulation scheme for single-phase three-level neutral-point-clamped grid-side converters in electric railway traction

Distributed power flow control using cascaded multilevel isolated bidirectional DC–DC converter with multi-phase shift modulation

Improved modulation method of modular multilevel converter

Balancing scheme for phase current and flying-capacitor voltage in three-level DC–DC converter

Analysis of a seven-level asymmetrical hybrid multilevel converter for traction systems

Similar Documents

Novel multi-level inverters with flyback high frequency link

Single-phase ac–dc–ac topology for grid overvoltage and voltage harmonic mitigation

Dual asymmetrical dc voltage source based switched capacitor boost multilevel inverter topology

Multilevel converter with capacitor voltage actively balanced using reduced number of voltage sensors for high power applications

Cascaded multilevel inverter using series connection of novel capacitor-based units with minimum switch count

Hybrid single-carrier-based pulse width modulation scheme for single-phase three-level neutral-point-clamped grid-side converters in electric railway traction

Distributed power flow control using cascaded multilevel isolated bidirectional DC–DC converter with multi-phase shift modulation

Improved modulation method of modular multilevel converter

Balancing scheme for phase current and flying-capacitor voltage in three-level DC–DC converter

Analysis of a seven-level asymmetrical hybrid multilevel converter for traction systems