NDLI: Single-stage high-frequency-isolated three-phase four-leg buck

Content Provider	IET Digital Library
Author	Gu, Ling Zhu, Wei
Abstract	A three-phase four-leg inverter shows its preponderance on providing energy to unbalanced load and high DC-link utilisation. To increase the power density of the traditional three-phase four-leg inverter with power frequency isolation, this study proposes a single-stage isolated three-phase four-leg inverter. To ensure the symmetry of three-phase output voltages, the proposed converter provides the path for neutral current resulted by the unbalanced load. It achieves buck–boost DC/AC conversion by introducing the transformer whose turns ratio provides additional voltage gain. The working frequency of the transformer is in accord with the switching frequency, so high-frequency electrical isolation is realised with a single-stage structure as well. The specific mode analysis and the relationship between the switching states and the voltage vectors are presented. A modified three-dimensional space vector pulse width modulation algorithm with a simplified section partition method is proposed, which guarantees the voltage-second balance of the transformer within one switching cycle as well. In order to explore the feasibility of the topology and control strategy, the simulation is done by MATLAB/Simulink. Then a prototype was built in the lab and the experimental results verify that the inverter can produce balanced voltages under both balanced and unbalanced load.
Starting Page	23
Ending Page	31
Page Count	9
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 1, Jan (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.0436
Journal	IET Power Electronics
Publisher Date	2019-10-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Additional Voltage Gain Control of Electric Power System DC-AC Power Converter DC-DC Power Converter Four-leg Buck–boost Inverter Four-leg Inverter High DC-link Utilisation High-frequency Electrical Isolation Invertors Power Converter Power Density Power Electronics Power Frequency Isolation Power Supplies to Apparatus Power Supply PWM Invertors PWM Power Converter Single-stage High-frequency-isolated Single-stage Structure Supervisory Circuit Switching Circuit Switching Converter Three-phase Output Voltage Transformer Unbalanced Load Voltage Vector Voltage-second Balance Working Frequency
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

Single DC source three-phase multilevel inverter using reduced number of switches

Single-phase boost DC-link integrated cascaded multilevel inverter for PV applications

RDCL three-phase inverter and load adaptive commutation control

Single dc-source-based seven-level boost inverter for electric vehicle application

Novel three-phase asymmetrical cascaded multilevel voltage source inverter

Three-phase hybrid multilevel inverter with less power electronic components using space vector modulation

Single-stage ac–dc buck–boost converter for medium-voltage high-power applications

Natural DC-link voltage balance in a single-phase NPC inverter with four-level legs and novel modulation method

Single phase nine level inverter using single DC source supported by capacitor voltage balancing algorithm

Single-stage high-frequency-isolated three-phase four-leg buck–boost inverter with unbalanced load

Similar Documents

Single DC source three-phase multilevel inverter using reduced number of switches

Single-phase boost DC-link integrated cascaded multilevel inverter for PV applications

RDCL three-phase inverter and load adaptive commutation control

Single dc-source-based seven-level boost inverter for electric vehicle application

Novel three-phase asymmetrical cascaded multilevel voltage source inverter

Three-phase hybrid multilevel inverter with less power electronic components using space vector modulation

Single-stage ac–dc buck–boost converter for medium-voltage high-power applications

Natural DC-link voltage balance in a single-phase NPC inverter with four-level legs and novel modulation method

Single phase nine level inverter using single DC source supported by capacitor voltage balancing algorithm

Single-stage high-frequency-isolated three-phase four-leg buck–boost inverter with unbalanced load